CVE-2025-31650
Improper Input Validation vulnerability in Apache Tomcat.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 59.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service. This issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.90 though 8.5.100. Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 59.92% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-459
- Affected
- apache/tomcat
- Source
- security@apache.org
References
- https://lists.apache.org/thread/j6zzk0y3yym9pzfzkq5vcyxzz0yzh826Mailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/04/28/2Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.