Apache Tomcat: Bad ornext processing in RewriteValve
Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.
- BDU:2026-11859
- openSUSE-SU-2026:11195-1
- openSUSE-SU-2026:11208-1
- openSUSE-SU-2026:11209-1
- openSUSE-SU-2026:21327-1
- openSUSE-SU-2026:21328-1
- openSUSE-SU-2026:21329-1
- RHSA-2026:29203
- RHSA-2026:32960
- RHSA-2026:43401
- RHSA-2026:49951
- RHSA-2026:68651
- RHSA-2026:68660
- SUSE-SU-2026:22646-1
- SUSE-SU-2026:22647-1
- SUSE-SU-2026:22648-1
- SUSE-SU-2026:3087-1
- SUSE-SU-2026:3088-1
- SUSE-SU-2026:3112-1
- SUSE-SU-2026:3167-1
- Published
- Jun 29, 2026
- Updated
- Jul 2, 2026
- EPSS
- 0.7% · 49th percentile
- CWE
- CWE-670
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Report tools
Action score
29
Monitor
Low priority for now.
- CVSS
- 29 / 40 · 7.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.7%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| apache | tomcat | cpe:2.3:a:apache:tomcat |
Affected versions
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 8.5.100 inclusive
- apache tomcat9.0.0 and later · before 9.0.119
- apache tomcat10.1.0 and later · before 10.1.56
- apache tomcat11.0.0 and later · before 11.0.23
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
- 11.0.0-M1 and later · up to and including 11.0.22affected · semver
- 10.1.0-M1 and later · up to and including 10.1.55affected · semver
- 9.0.0.M1 and later · up to and including 9.0.118affected · semver
- 8.5.0 and later · up to and including 8.5.100affected · semver
- before 8.0.0not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | tomcat10 | all versions | — |
| Debian:12 | tomcat9 | before 9.0.70-2 | 9.0.70-2 |
| Debian:13 | tomcat11 | all versions | — |
| Debian:14 | tomcat10 | before 10.1.60-1 | 10.1.60-1 |
| Debian:14 | tomcat11 | before 11.0.24-1 | 11.0.24-1 |
| openSUSE:Leap 16.0 | tomcat | before 9.0.119-160000.1.1 | 9.0.119-160000.1.1 |
| openSUSE:Leap 16.0 | tomcat10 | before 10.1.56-160000.1.1 | 10.1.56-160000.1.1 |
| openSUSE:Leap 16.0 | tomcat11 | before 11.0.23-160000.1.1 | 11.0.23-160000.1.1 |
| openSUSE:Tumbleweed | tomcat | before 9.0.119-1.1 | 9.0.119-1.1 |
| openSUSE:Tumbleweed | tomcat10 | before 10.1.56-1.1 | 10.1.56-1.1 |
| openSUSE:Tumbleweed | tomcat11 | before 11.0.23-1.1 | 11.0.23-1.1 |
| Red Hat:enterprise_linux:10.2 | tomcat9 | before 1:9.0.120-1.el10_2 | 1:9.0.120-1.el10_2 |
| Red Hat:enterprise_linux:10.2 | tomcat9-admin-webapps | before 1:9.0.120-1.el10_2 | 1:9.0.120-1.el10_2 |
| Red Hat:enterprise_linux:10.2 | tomcat9-docs-webapp | before 1:9.0.120-1.el10_2 | 1:9.0.120-1.el10_2 |
| Red Hat:enterprise_linux:10.2 | tomcat9-el-3.0-api | before 1:9.0.120-1.el10_2 | 1:9.0.120-1.el10_2 |
| Red Hat:enterprise_linux:10.2 | tomcat9-jsp-2.3-api | before 1:9.0.120-1.el10_2 | 1:9.0.120-1.el10_2 |
| Red Hat:enterprise_linux:10.2 | tomcat9-lib | before 1:9.0.120-1.el10_2 | 1:9.0.120-1.el10_2 |
| Red Hat:enterprise_linux:10.2 | tomcat9-servlet-4.0-api | before 1:9.0.120-1.el10_2 | 1:9.0.120-1.el10_2 |
| Red Hat:enterprise_linux:10.2 | tomcat9-webapps | before 1:9.0.120-1.el10_2 | 1:9.0.120-1.el10_2 |
| Red Hat:enterprise_linux:9::appstream | tomcat | before 1:9.0.120-2.el9_8 | 1:9.0.120-2.el9_8 |
| Red Hat:enterprise_linux:9::appstream | tomcat-admin-webapps | before 1:9.0.120-2.el9_8 | 1:9.0.120-2.el9_8 |
| Red Hat:enterprise_linux:9::appstream | tomcat-docs-webapp | before 1:9.0.120-2.el9_8 | 1:9.0.120-2.el9_8 |
| Red Hat:enterprise_linux:9::appstream | tomcat-el-3.0-api | before 1:9.0.120-2.el9_8 | 1:9.0.120-2.el9_8 |
| Red Hat:enterprise_linux:9::appstream | tomcat-jsp-2.3-api | before 1:9.0.120-2.el9_8 | 1:9.0.120-2.el9_8 |
+72
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 beforeKEV96Now
- 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
- CVE-2017-12615When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g.KEV92Now
- CVE-2026-34486Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptorKEV62This week
- CVE-2019-0232When running on Windows with enableCmdLineArguments enabled, the CGI Servlet in Apache Tomcat 9.0.0.M1 to 9.0.17, 8.5.0 to 8.5.39 and 7.0.0 62This week
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 |
|---|---|---|
| Apache Software Foundation Apache Tomcat | 11.0.23 · description | Vendor (CNA) |
| debian:tomcat10 | 10.1.60-1 · Debian:14 | Package registry (OSV) |
| debian:tomcat11 | 11.0.24-1 · Debian:14 | Package registry (OSV) |
| debian:tomcat9 | 9.0.70-2 · Debian:12 | Package registry (OSV) |
| opensuse:tomcat | 9.0.119-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:tomcat10 | 10.1.56-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:tomcat11 | 11.0.23-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:jws6-tomcat | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-admin-webapps | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-docs-webapp | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-el-5.0-api | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-javadoc | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-jsp-3.1-api | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-lib | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-selinux | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-servlet-6.0-api | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:jws6-tomcat-webapps | 0:10.1.49-15.redhat_00013.1.el10jws · Red Hat:jboss_enterprise_web_server:6.2::el10 | Package registry (OSV) |
| red hat:tomcat10 | 0:10.1.56-1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:tomcat11 | 0:11.0.23-0.1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| suse:tomcat | 9.0.119-160000.1.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:tomcat10 | 10.1.56-160000.1.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:tomcat11 | 11.0.23-160000.1.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
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.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-552760 days apartApache Tomcat: Logged effective web.xml is incomplete36Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- low · data or configuration can be modified
- Availability
- low · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- Low
- Availability impact
- Low
Weakness class (CWE)
CWE-670 · Always-Incorrect Control Flow ImplementationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.apache.org/thread/rdhpghgfskrdmw9hqzjgjrtw538smpmz
- www.openwall.com/lists/oss-security/2026/06/29/21
Vendor advisories and official records. Exploit/PoC links are deliberately left out.