CVE-2025-31650: Apache Tomcat · Incomplete Cleanup
Affects Apache TomcatSource GCVE Database
Public exploit available (Exploit-DB) · CVSS 7.5 High.
Data as of 30 Oct 2026, 00:15 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 7.5 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 28 Apr 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
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
Timeline
CVE ID reserved
by Apache Software Foundation
, 28 days before disclosure
CVE published
on cve.org
, t = 0
First Exploit-DB entry (opens in a new tab)
Apache Tomcat 10.1.39 - Denial of Service (DoS)
, 38 days after disclosure
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 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apache Software Foundation Apache Tomcat | Affected
| Fixed in– |
AI-suggested
Users should upgrade to Apache Tomcat versions 9.0.104, 10.1.40, or 11.0.6 where this vulnerability is fixed. No other mitigation or temporary workaround is indicated by the vendor advisory.
Description
CVE-2025-31650 is an improper input validation vulnerability in Apache Tomcat affecting versions 8.5.90 through 8.5.100, 9.0.76 through 9.0.102, 10.1.10 through 10.1.39, and 11.0.0-M2 through 11.0.5. The flaw involves incorrect error handling of invalid HTTP priority headers that leads to incomplete cleanup of failed requests, causing a memory leak. This can result in an OutOfMemoryException and denial of service if exploited with a large number of such requests. Fixed versions are 9.0.104, 10.1.40, and 11.0.6.