WaratekVRT Sign in

CVE-2026-43512 Apache Tomcat

Affected softwareApache Tomcat
Severity9.8 Critical CVSS 3.1
Fixed in9.0.118, 10.1.55, 11.0.22
WeaknessImproper authentication (CWE-287)
Published12 May 2026
Updated26 Oct 2026

Description

DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

CWE-592

Exploitation status

No public exploit

No exploit has been reported in the sources we check. The 1 repository below are public GitHub repositories with fewer than 5 stars.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC 1 indexed, none at 5+ stars
  • EPSS 1.3% chance in 30 days

1 of these are GitHub repositories with fewer than 5 stars. They are listed for reference and don't count toward the exploitation status above.

IndexArtifactStarsFirst seen
GitHub PoC Exploitability PoC for CVE-2026-43512 (Apache Tomcat Digest Authentication Bypass) 2 2026-06-08

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists: apache/tomcat 3d4d3fa.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2026 ↗ CPU 2026-Q4 Oracle Communications / Microservices (Apache Tomcat) (7.0.0)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Communications Microservices (Apache Tomcat) 7.0.0 7.0.0

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.tomcat.embed:tomcat-embed-core 0 9.0.118 unbounded
org.apache.tomcat.embed:tomcat-embed-core 10.1.0-M1 10.1.55 unbounded
org.apache.tomcat.embed:tomcat-embed-core 11.0.0-M1 11.0.22 unbounded
org.apache.tomcat:tomcat 0 9.0.118 unbounded
org.apache.tomcat:tomcat 10.1.0-M1 10.1.55 unbounded
org.apache.tomcat:tomcat 11.0.0-M1 11.0.22 unbounded
org.apache.tomcat:tomcat-catalina 0 9.0.118 unbounded
org.apache.tomcat:tomcat-catalina 10.1.0-M1 10.1.55 unbounded
org.apache.tomcat:tomcat-catalina 11.0.0-M1 11.0.22 unbounded

Products and versions

4 products, 14 version entries
SourceVendorProductSchemeAffected versions
nvd apache tomcat generic ≥ 7.0.0 and ≤ 7.0.109 · ≥ 8.5.0 and ≤ 8.5.100 · ≥ 9.0.0 and < 9.0.118 · ≥ 10.1.0 and < 10.1.55 · ≥ 11.0.0 and < 11.0.22
osv org.apache.tomcat tomcat generic < 9.0.118 · ≥ 10.1.0 and < 10.1.55 · ≥ 11.0.0 and < 11.0.22
osv org.apache.tomcat tomcat-catalina generic < 9.0.118 · ≥ 10.1.0 and < 10.1.55 · ≥ 11.0.0 and < 11.0.22
osv org.apache.tomcat.embed tomcat-embed-core generic < 9.0.118 · ≥ 10.1.0 and < 10.1.55 · ≥ 11.0.0 and < 11.0.22

References

URLTags
https://github.com/apache/tomcat/commit/3d4d3fae07a6cd9c2eb193c5491001740ec64448 WEB
https://github.com/apache/tomcat/commit/6565a6cb6499e56fe2f34457cec99f9d1c4f39e9 WEB
https://github.com/apache/tomcat/commit/a99c355e8199adbfd67c9a1fffbd85b810b196cd WEB
https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73 WEB
https://tomcat.apache.org/security-10.html WEB
https://tomcat.apache.org/security-11.html WEB
https://tomcat.apache.org/security-9.html WEB
http://www.openwall.com/lists/oss-security/2026/05/12/8 WEB

Timeline

Published2026-05-12By the CVE Program.
NVD record modified2026-10-26NVD's own last-modified date for this record.