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CVE-2024-21733 Apache Tomcat

Affected softwareApache Tomcat
Severity5.3 Medium CVSS 3.1 2 scores
Fixed in9.0.44, 8.5.64
WeaknessCWE-209
Published19 Jan 2024
Updated17 Jun 2026

Description

Generation of Error Message Containing Sensitive Information vulnerability in Apache Tomcat.This issue affects Apache Tomcat: from 8.5.7 through 8.5.63, from 9.0.0-M11 through 9.0.43. Other, EOL versions may also be affected. Users are recommended to upgrade to version 8.5.64 onwards or 9.0.44 onwards, which contain a fix for the issue.

Exploitation status

Proof of concept only

A proof of concept exists, but no reviewed exploit catalogue lists this CVE.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC 1 indexed Published artifacts you can open, in GitHub PoC; first seen 2024-08-15.
  • EPSS 14% chance in 30 days A model's forecast, not a report of exploitation. Higher than 97% of all scored CVEs.
IndexArtifactStarsFirst seen
GitHub PoC 一个验证对CVE-2024-21733 26 2024-08-15

Waratek protection

Mitigation candidate

A kind of vulnerability Waratek's rules address, with exploit code published or exploitation reported. No rule exists and none is planned yet. The decision below says what we found to build a rule from.

  • Protection none
  • Action unverified
  • Review automated Inferred
  • Record active
Decided by The affected package being open source on Maven, so the fix can be read
Finding This CVE affects an open-source Java library published on Maven Central (Maven packages: org.apache.tomcat:tomcat-coyote, org.apache.tomcat.embed:tomcat-embed-core, org.apache.tomcat.experimental:tomcat-embed-programmatic), so it is squarely in ARMR's territory and the source needed to understand the defect is public. That makes it a candidate for an ARMR patch rule. No rule exists and none is scheduled: the diff between the affected and fixed versions has not been read, and a closer look may find no hook point ARMR can act on.

CVSS

5.3 MEDIUM v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N NVD Primary published
CVSS 3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CISA-ADP Secondary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.tomcat:tomcat-coyote 9.0.0-M11 9.0.44 unbounded
org.apache.tomcat.embed:tomcat-embed-core 8.5.7 8.5.64 unbounded
org.apache.tomcat.embed:tomcat-embed-core 9.0.0-M11 9.0.44 unbounded
org.apache.tomcat:tomcat-coyote 8.5.7 8.5.64 unbounded
org.apache.tomcat.experimental:tomcat-embed-programmatic 9.0.43 9.0.44 unbounded

Products and versions

4 products, 24 version entries
SourceVendorProductSchemeAffected versions
nvd apache tomcat generic ≥ 8.5.7 and < 8.5.64 · 9.0.0:milestone11 · 9.0.0:milestone12 · 9.0.0:milestone13 · 9.0.0:milestone14 · 9.0.0:milestone15 · 9.0.0:milestone16 · 9.0.0:milestone17 · 9.0.0:milestone18 · 9.0.0:milestone19 · 9.0.0:milestone20 · 9.0.0:milestone21 · 9.0.0:milestone22 · 9.0.0:milestone23 · 9.0.0:milestone24 · 9.0.0:milestone25 · 9.0.0:milestone26 · 9.0.0:milestone27 · ≥ 9.0.1 and < 9.0.44
osv org.apache.tomcat tomcat-coyote generic ≥ 8.5.7 and < 8.5.64 · ≥ 9.0.0 and < 9.0.44
osv org.apache.tomcat.embed tomcat-embed-core generic ≥ 8.5.7 and < 8.5.64 · ≥ 9.0.0 and < 9.0.44
osv org.apache.tomcat.experimental tomcat-embed-programmatic generic ≥ 9.0.43 and < 9.0.44

References

URLTags
https://github.com/apache/tomcat/commit/86ccc43940861703c2be96a5f35384407522125a WEB
https://github.com/apache/tomcat/commit/ce4b154e7b48f66bd98858626347747cd2514311 WEB
https://github.com/apache/tomcat PACKAGE
https://lists.apache.org/thread/h9bjqdd0odj6lhs2o96qgowcc6hb0cfz WEB
https://lists.debian.org/debian-lts-announce/2025/01/msg00009.html WEB
https://security.netapp.com/advisory/ntap-20240216-0005 WEB
https://tomcat.apache.org/security-8.html WEB
https://tomcat.apache.org/security-9.html WEB
http://packetstormsecurity.com/files/176951/Apache-Tomcat-8.5.63-9.0.43-HTTP-Response-Smuggling.html WEB
http://www.openwall.com/lists/oss-security/2024/01/19/2 WEB

Timeline

Published2024-01-19By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.