CVE-2018-11784: When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a…
Noroxi assessment
Priority: Plan (action score 46/100)
- A ready-made attack module is public (Nuclei); exploiting it takes no special expertise.
- Public proof-of-concept code exists (Exploit-DB, GitHub); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 97.6% (FIRST EPSS); higher than 99.9% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- Fixed version: apache-commons-collections (AlmaLinux:8) 3.2.2-10.module_el8.5.0+2577+9e95fe00, 3.2.2-10.module_el8.5.0+150+5f0dbea0; apache-commons-lang (AlmaLinux:8) 2.6-21.module_el8.5.0+2577+9e95fe00, 2.6-21.module_el8.5.0+150+5f0dbea0; bea-stax-api (AlmaLinux:8) 1.2.0-16.module_el8.5.0+2577+9e95fe00, 1.2.0-16.module_el8.5.0+150+5f0dbea0.
- Mentioned 3 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Add it to your regular patch cycle. Upgrade to apache-commons-collections (AlmaLinux:8) 3.2.2-10.module_el8.5.0+2577+9e95fe00, 3.2.2-10.module_el8.5.0+150+5f0dbea0; apache-commons-lang (AlmaLinux:8) 2.6-21.module_el8.5.0+2577+9e95fe00, 2.6-21.module_el8.5.0+150+5f0dbea0; bea-stax-api (AlmaLinux:8) 1.2.0-16.module_el8.5.0+2577+9e95fe00, 1.2.0-16.module_el8.5.0+150+5f0dbea0 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.
- BDU:2019-01767
- GHSA-5q99-f34m-67gc
- ALSA-2019:1529
- DLA-1544-1
- DLA-1545-1
- DSA-4596-1
- openSUSE-SU-2019:1547-1
- openSUSE-SU-2019:1814-1
- openSUSE-SU-2024:11468-1
- openSUSE-SU-2024:11501-1
- openSUSE-SU-2024:13441-1
- RHSA-2018:2868
- RHSA-2019:0131
- RHSA-2019:0485
- RHSA-2019:1529
- RLSA-2019:1529
- SUSE-SU-2018:3261-1
- SUSE-SU-2018:3388-1
- SUSE-SU-2018:3393-1
- SUSE-SU-2018:3935-1
- Published
- Oct 4, 2018
- Updated
- Oct 15, 2026
- EPSS
- 97.6% · 99th percentile
- CWE
- CWE-601
Report tools
Action score
46
Add it to your regular patch cycle.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 29 / 30 · 97.6%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| apache | tomcat | cpe:2.3:a:apache:tomcat |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| netapp | snap creator framework | cpe:2.3:a:netapp:snap_creator_framework |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server aus | cpe:2.3:o:redhat:enterprise_linux_server_aus |
| redhat | enterprise linux server eus | cpe:2.3:o:redhat:enterprise_linux_server_eus |
| redhat | enterprise linux server tus | cpe:2.3:o:redhat:enterprise_linux_server_tus |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| oracle | communications application session controller | cpe:2.3:a:oracle:communications_application_session_controller |
| oracle | hospitality guest access | cpe:2.3:a:oracle:hospitality_guest_access |
and 3 more
Versions reported by the vendor
Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.
Apache Software Foundation Apache Tomcat
- 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33, 7.0.23 to 7.0.90affected
Affected versions · NVD (20)
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apache tomcat8.5.0 and later · up to 8.5.33 inclusive
- apache tomcat9.0.1 and later · up to 9.0.11 inclusive
- apache tomcat7.0.23 and later · up to 7.0.90 inclusive
- apache tomcat9.0.0
- canonical ubuntu linux14.04
- canonical ubuntu linux16.04
- debian debian linux8.0
- netapp snap creator frameworkall versions
- oracle communications application session controller3.7.1
- oracle communications application session controller3.8.0
- oracle hospitality guest access4.2.0
- oracle hospitality guest access4.2.1
- oracle instantis enterprisetrack17.1
- oracle instantis enterprisetrack17.2
- oracle instantis enterprisetrack17.3
- oracle retail order broker15.0
- oracle retail order broker5.1
- oracle retail order broker5.2
- oracle secure global desktop5.4
- redhat enterprise linux desktop7.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | apache-commons-collections | before 3.2.2-10.module_el8.5.0+2577+9e95fe00 | 3.2.2-10.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | apache-commons-collections | before 3.2.2-10.module_el8.5.0+150+5f0dbea0 | 3.2.2-10.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | apache-commons-lang | before 2.6-21.module_el8.5.0+2577+9e95fe00 | 2.6-21.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | apache-commons-lang | before 2.6-21.module_el8.5.0+150+5f0dbea0 | 2.6-21.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | bea-stax-api | before 1.2.0-16.module_el8.5.0+2577+9e95fe00 | 1.2.0-16.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | bea-stax-api | before 1.2.0-16.module_el8.5.0+150+5f0dbea0 | 1.2.0-16.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | glassfish-fastinfoset | before 1.2.13-9.module_el8.5.0+150+5f0dbea0 | 1.2.13-9.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | glassfish-fastinfoset | before 1.2.13-9.module_el8.5.0+2577+9e95fe00 | 1.2.13-9.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | glassfish-jaxb-api | before 2.2.12-8.module_el8.5.0+2577+9e95fe00 | 2.2.12-8.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | glassfish-jaxb-api | before 2.2.12-8.module_el8.5.0+150+5f0dbea0 | 2.2.12-8.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | glassfish-jaxb-core | before 2.2.11-11.module_el8.5.0+2577+9e95fe00 | 2.2.11-11.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | glassfish-jaxb-core | before 2.2.11-11.module_el8.5.0+150+5f0dbea0 | 2.2.11-11.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | glassfish-jaxb-runtime | before 2.2.11-11.module_el8.5.0+2577+9e95fe00 | 2.2.11-11.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | glassfish-jaxb-runtime | before 2.2.11-11.module_el8.5.0+150+5f0dbea0 | 2.2.11-11.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | glassfish-jaxb-txw2 | before 2.2.11-11.module_el8.5.0+2577+9e95fe00 | 2.2.11-11.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | glassfish-jaxb-txw2 | before 2.2.11-11.module_el8.5.0+150+5f0dbea0 | 2.2.11-11.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | jackson-module-jaxb-annotations | before 2.7.6-4.module_el8.5.0+150+5f0dbea0 | 2.7.6-4.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | jackson-module-jaxb-annotations | before 2.7.6-4.module_el8.5.0+2577+9e95fe00 | 2.7.6-4.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | jakarta-commons-httpclient | before 1:3.1-28.module_el8.5.0+150+5f0dbea0 | 1:3.1-28.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | jakarta-commons-httpclient | before 1:3.1-28.module_el8.5.0+2577+9e95fe00 | 1:3.1-28.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | javassist | before 3.18.1-8.module_el8.5.0+150+5f0dbea0 | 3.18.1-8.module_el8.5.0+150+5f0dbea0 |
| AlmaLinux:8 | javassist | before 3.18.1-8.module_el8.5.0+2577+9e95fe00 | 3.18.1-8.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | javassist-javadoc | before 3.18.1-8.module_el8.5.0+2577+9e95fe00 | 3.18.1-8.module_el8.5.0+2577+9e95fe00 |
| AlmaLinux:8 | javassist-javadoc | before 3.18.1-8.module_el8.5.0+150+5f0dbea0 | 3.18.1-8.module_el8.5.0+150+5f0dbea0 |
+96
Same product
apache: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-24813Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUTKEV99Now
- CVE-2016-8735Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8.5.7, and 9.x…KEV96Now
- CVE-2017-12617When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTTP PUTs enabled (e.g.KEV92Now
Published before and after this one in the same product
- ← EarlierCVE-2018-1336Aug 2, 2018 · An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a…36Monitor
- ← EarlierCVE-2018-8037Aug 2, 2018 · If an async request was completed by the application at the same time as the container triggered the async timeout, a race condition…26Monitor
- Later →CVE-2019-0199Apr 10, 2019 · The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS…52Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:apache-commons-collections | 3.2.2-10.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:apache-commons-lang | 2.6-21.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:bea-stax-api | 1.2.0-16.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glassfish-fastinfoset | 1.2.13-9.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glassfish-jaxb-api | 2.2.12-8.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glassfish-jaxb-core | 2.2.11-11.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glassfish-jaxb-runtime | 2.2.11-11.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:glassfish-jaxb-txw2 | 2.2.11-11.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:jackson-module-jaxb-annotations | 2.7.6-4.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:jakarta-commons-httpclient | 1:3.1-28.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:javassist | 3.18.1-8.module_el8.5.0+150+5f0dbea0 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:javassist-javadoc | 3.18.1-8.module_el8.5.0+2577+9e95fe00 · AlmaLinux:8 | Package registry (OSV) |
| debian:tomcat7 | 7.0.56-3+really7.0.91-1 · Debian:8 | Package registry (OSV) |
| debian:tomcat8 | 8.0.14-1+deb8u14 · Debian:8 | Package registry (OSV) |
| Maven:org.apache.tomcat.embed:tomcat-embed-core | 7.0.91 | Package registry (OSV) |
| Maven:org.apache.tomcat.embed:tomcat-embed-core | 8.5.34 | Package registry (OSV) |
| Maven:org.apache.tomcat.embed:tomcat-embed-core | 9.0.12 | Package registry (OSV) |
| opensuse:tomcat | 9.0.36-8.4 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:tomcat10 | 10.1.14-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:virtualbox | 5.2.24-lp150.4.33.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| red hat:jws5-tomcat | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-admin-webapps | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-docs-webapp | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-el-3.0-api | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-javadoc | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-jsp-2.3-api | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-jsvc | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-lib | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-selinux | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
| red hat:jws5-tomcat-servlet-4.0-api | 0:9.0.7-12.redhat_12.1.el6jws · Red Hat:jboss_enterprise_web_server:5.0::el6 | Package registry (OSV) |
+16
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
- Nuclei detection template ×1
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | webapps | 2021-07-13 |
| Nuclei detection template | Nuclei template CVE-2018-11784 | — |
| Proof-of-concept repository on GitHub | stars:0 | 2024-05-27 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+1012 d
- TodayNov 14, 2026+2963 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-21-0579 · Jul 14, 2021(Apache Güvenlik Zafiyeti)
- TR-19-344 · Dec 29, 2019(Apache, Tomcat için Güvenlik Güncellemeleri Yayınladı)
- TR-18-123 · Oct 8, 2018(Apache, Tomcat için Güvenlik Güncellemeleri Yayınladı)
Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- low · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- Low
- Availability impact
- None
Weakness class (CWE)
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log (2)
- SSVC exploitation— → none
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html
- www.securityfocus.com/bid/105524
- access.redhat.com/errata/RHSA-2019:0130
- access.redhat.com/errata/RHSA-2019:0131
- access.redhat.com/errata/RHSA-2019:0485
- access.redhat.com/errata/RHSA-2019:1529
- kc.mcafee.com/corporate/index?page=content&id=SB10284
- lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/23134c9b5a23892a205dc140cdd8c9c0add233600f76b313dda6bd75%40%3Cannounce.tomcat.apache.org%3E
- lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/5c0e00fd31efc11e147bf99d0f03c00a734447d3b131ab0818644cdb%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/eb6efa8d59c45a7a9eff94c4b925467d3b3fec8ba7697f3daa314b04%40%3Cdev.tomcat.apache.org%3E
Vendor advisories and official records. Exploit/PoC links are deliberately left out.