Vulnerability · Published Sep 23, 2026 · Assigned by apache
CVE-2026-73581Apache Tomcat: OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore
Medium 6.5
In plain English
A medium-severity security flaw in Apache Tomcat from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0-M1 through 9.0.121. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.26, 10.1.59, 9.0.122, which fixes the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | tomcat10 | no fix listed | DEBIAN-CVE-2026-73581 |
| Debian:13 | tomcat10 | no fix listed | DEBIAN-CVE-2026-73581 |
| Debian:14 | tomcat10 | 10.1.60-1 | DEBIAN-CVE-2026-73581 |
| Debian:13 | tomcat11 | no fix listed | DEBIAN-CVE-2026-73581 |
| Debian:14 | tomcat11 | no fix listed | DEBIAN-CVE-2026-73581 |
| Debian:12 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-73581 |
| Debian:13 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-73581 |
| Debian:14 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2026-73581 |
| Ubuntu:24.04:LTS | tomcat10 | no fix listed | UBUNTU-CVE-2026-73581 |
| Ubuntu:26.04:LTS | tomcat10 | no fix listed | UBUNTU-CVE-2026-73581 |
| Ubuntu:26.10 | tomcat10 | no fix listed | UBUNTU-CVE-2026-73581 |
| Ubuntu:26.04:LTS | tomcat11 | no fix listed | UBUNTU-CVE-2026-73581 |
| Ubuntu:26.10 | tomcat11 | no fix listed | UBUNTU-CVE-2026-73581 |
| Ubuntu:24.04:LTS | tomcat9 | no fix listed | UBUNTU-CVE-2026-73581 |
| Ubuntu:26.04:LTS | tomcat9 | no fix listed | UBUNTU-CVE-2026-73581 |
| Ubuntu:26.10 | tomcat9 | no fix listed | UBUNTU-CVE-2026-73581 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – through 11.0.2510.1.0-M1 – through 10.1.599.0.0.M1 – through 9.0.1218.5.0 – through 8.5.100 |
Weakness: CWE-299 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N