CVE-2026-73581: Apache Tomcat · Improper Check for Certificate Revocation
Affects Apache TomcatSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium · fixed in 11.0.26 : update Apache Tomcat when convenient.
Data as of 6 Nov 2026, 23:24 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 6.5 |
|---|
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 11.0.26, 10.1.59, 9.0.122 +1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 23 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.
What to do
Upgrade org.apache.tomcat/tomcat to 11.0.26, 10.1.59, 9.0.122 or 8.5.101.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apache Software FoundationApache Tomcat | Affected
| Fixed in– |
Mavenorg.apache.tomcat/tomcatpkg:maven/org.apache.tomcat/tomcatOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should upgrade affected Apache Tomcat versions to the fixed releases: 11.0.26, 10.1.59, 9.0.122, or 8.5.101. Applying these official fixes will resolve the improper certificate revocation checking issue. No additional mitigations are specified by the vendor.
Description
CVE-2026-73581 is an improper check for certificate revocation vulnerability in Apache Tomcat's TLS implementations using OpenSSL and OpenSSL-FFM. The issue causes the system to ignore Certificate Revocation Lists (CRLs) when certificates use a keystore, potentially allowing revoked certificates to be accepted. This affects multiple Apache Tomcat versions from 8.5.0 through 11.0.25. Fixed versions include 11.0.26, 10.1.59, 9.0.122, and 8.5.101.