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CVE-2018-11761· NVD / CVE Program· CNA apache

In Apache Tika 0.1 to 1.18, the XML parsers were not configured to limit entity expansion.

Noroxi assessment

Priority: Monitor (action score 33/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 9.3% (FIRST EPSS); higher than 95.3% of all records.
  • 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.
  • Fixed version: tika (Debian:11) 1.20-1; org.apache.tika:tika-core (Maven) 1.19.1; spacewalk-web (SUSE:Manager Proxy 3.2) 2.8.7.11-3.13.3.

Low priority for now. Upgrade to tika (Debian:11) 1.20-1; org.apache.tika:tika-core (Maven) 1.19.1; spacewalk-web (SUSE:Manager Proxy 3.2) 2.8.7.11-3.13.3 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

In Apache Tika 0.1 to 1.18, the XML parsers were not configured to limit entity expansion. They were therefore vulnerable to an entity expansion vulnerability which can lead to a denial of service attack.

HighCVSS 7.5 · v3.0—Proof of concept Fix available
Published
Sep 19, 2018
Updated
Jun 16, 2026
EPSS
9.3% · 95th percentile

Report tools

JSON

Action score

33

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
3 / 30 · 9.3%

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.

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi 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.

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Affected 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.

VendorProduct
apachetika
oraclebusiness process management suite

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apache tika0.1 and later · up to 1.18 inclusive
  • oracle business process management suite12.1.3.0.0
  • oracle business process management suite12.2.1.3.0

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 Tika

    • 0.1 to 1.18affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:11tikabefore 1.20-11.20-1
Mavenorg.apache.tika:tika-corefrom 0.1 · before 1.19.11.19.1
SUSE:Manager Proxy 3.2spacewalk-webbefore 2.8.7.11-3.13.32.8.7.11-3.13.3
SUSE:Manager Server 3.2apache-mybatisbefore 3.2.3-3.3.33.2.3-3.3.3
SUSE:Manager Server 3.2cobblerbefore 2.6.6-6.10.32.6.6-6.10.3
SUSE:Manager Server 3.2hadoopbefore 0.18.1-3.3.30.18.1-3.3.3
SUSE:Manager Server 3.2image-sync-formulabefore 0.1.1542287363.b8aa274-3.6.30.1.1542287363.b8aa274-3.6.3
SUSE:Manager Server 3.2lucenebefore 2.4.1-4.3.32.4.1-4.3.3
SUSE:Manager Server 3.2nekohtmlbefore 1.9.21-3.3.31.9.21-3.3.3
SUSE:Manager Server 3.2nutch-corebefore 1.0.1-7.10.31.0.1-7.10.3
SUSE:Manager Server 3.2picocontainerbefore 1.3.7-3.3.31.3.7-3.3.3
SUSE:Manager Server 3.2python-susemanager-retailbefore 1.0.1542643545.8752d17-2.6.31.0.1542643545.8752d17-2.6.3
SUSE:Manager Server 3.2salt-netapi-clientbefore 0.15.0-4.3.30.15.0-4.3.3
SUSE:Manager Server 3.2saltboot-formulabefore 0.1.1542287363.b8aa274-3.6.30.1.1542287363.b8aa274-3.6.3
SUSE:Manager Server 3.2spacecmdbefore 2.8.25.7-3.9.32.8.25.7-3.9.3
SUSE:Manager Server 3.2spacewalk-brandingbefore 2.8.5.12-3.10.42.8.5.12-3.10.4
SUSE:Manager Server 3.2spacewalk-configbefore 2.8.5.5-3.10.32.8.5.5-3.10.3
SUSE:Manager Server 3.2spacewalk-javabefore 2.8.78.13-3.13.12.8.78.13-3.13.1
SUSE:Manager Server 3.2spacewalk-searchbefore 2.8.3.7-3.12.32.8.3.7-3.12.3
SUSE:Manager Server 3.2spacewalk-setupbefore 2.8.7.5-3.10.32.8.7.5-3.10.3
SUSE:Manager Server 3.2spacewalk-utilsbefore 2.8.18.3-3.3.32.8.18.3-3.3.3
SUSE:Manager Server 3.2susemanagerbefore 3.2.14-3.13.33.2.14-3.13.3
SUSE:Manager Server 3.2susemanager-docs_enbefore 3.2-11.12.33.2-11.12.3
SUSE:Manager Server 3.2susemanager-frontend-libsbefore 3.2.4-3.7.33.2.4-3.7.3

+4

Same product

apache: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-66516Apache Tika core, Apache Tika parsers, Apache Tika PDF parser module: Update to CVE-2025-54988 to expand scope of artifacts affected
    66This week
  • CVE-2018-1335From Apache Tika versions 1.7 to 1.17, clients could send carefully crafted headers to tika-server that could be used to inject commands int
    60This week
  • CVE-2025-54988Apache Tika PDF parser module: XXE vulnerability in PDFParser's handling of XFA
    48Plan

Published before and after this one in the same product

  • ← EarlierCVE-2018-1338Apr 25, 2018 · A carefully crafted (or fuzzed) file can trigger an infinite loop in Apache Tika's BPGParser in versions of Apache Tika before 1.18.
    23Monitor
  • ← EarlierCVE-2018-1339Apr 25, 2018 · A carefully crafted (or fuzzed) file can trigger an infinite loop in Apache Tika's ChmParser in versions of Apache Tika before 1.18.
    23Monitor
  • Later →CVE-2018-11762Sep 19, 2018 · In Apache Tika 0.9 to 1.18, in a rare edge case where a user does not specify an extract directory on the commandline (--extract-dir=) and t
    25Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:tika1.20-1 · Debian:11Package registry (OSV)
Maven:org.apache.tika:tika-core1.19.1Package registry (OSV)
suse:apache-mybatis3.2.3-3.3.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:cobbler2.6.6-6.10.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:hadoop0.18.1-3.3.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:image-sync-formula0.1.1542287363.b8aa274-3.6.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:lucene2.4.1-4.3.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:nekohtml1.9.21-3.3.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:nutch-core1.0.1-7.10.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:picocontainer1.3.7-3.3.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:python-susemanager-retail1.0.1542643545.8752d17-2.6.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:salt-netapi-client0.15.0-4.3.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:saltboot-formula0.1.1542287363.b8aa274-3.6.3 · SUSE:Manager Server 3.2Package registry (OSV)
suse:spacewalk-web2.8.7.11-3.13.3 · SUSE:Manager Proxy 3.2Package registry (OSV)

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

  • 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.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:92019-01-23

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.

  1. Published
  2. First PoC+126 d
  3. TodayOct 20, 2026+2953 d
EPSS, last 120 days+1% in 7 days

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 researchers

Finders, 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.

No nightly-computed relations.

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
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-611 · Improper Restriction of XML External Entity Reference

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records