CVE-2026-25854

Aliases:GHSA-9m3c-qcxr-9x87BIT-tomcat-2026-25854UBUNTU-CVE-2026-25854DEBIAN-CVE-2026-25854
Advisory lineage Upstream: 0 Downstream: 15
Analyzed
Published: 09 Apr 2026, 19:13
Last modified:10 Apr 2026, 18:22

Vulnerability Summary

Overall Risk (default)
medium
25/100
CVSS Score
6.1 MEDIUM
v3.1 (cve.org)
EPSS Score
0.53% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Apr 2026, 19:13
Published
Vulnerability first disclosed
10 Apr 2026, 18:22
Last Modified
Vulnerability information updated

Description

Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100. Other, unsupported versions may also be affected Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.

CVSS Metrics

  • v4.0•MEDIUM•Score: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
  • v3.1•MEDIUM•Score: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Trends

Current EPSS score: 0.53%• Percentile: 42%

Techniques & Countermeasures

  • CWE-601•URL Redirection to Untrusted Site ('Open Redirect')

    The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

Affected Systems

  • apache software foundation•apache tomcat

    ≥ 11.0.0-M1, ≤ 11.0.18 | ≥ 10.1.0-M1, ≤ 10.1.52 | ≥ 9.0.0.M23, ≤ 9.0.115 | ≥ 8.5.30, ≤ 8.5.100

  • apache•tomcat

    ≥ 9.0.1, < 9.0.116 | ≥ 10.1.0, < 10.1.53 | ≥ 11.0.0, < 11.0.20 | 9.0.0:milestone23 | 9.0.0:milestone24 | 9.0.0:milestone25 | 9.0.0:milestone26 | 9.0.0:milestone27

  • debian•tomcat10

    < 10.1.55-1~deb12u1 | < 10.1.55-1~deb13u1 | < 10.1.54-1

  • debian•tomcat11

    < 11.0.22-1~deb13u1 | < 11.0.21-1

  • debian•tomcat9

    < 9.0.118-0+deb11u1 | < 9.0.70-2 | < 9.0.70-2 | < 9.0.70-2

  • ubuntu•tomcat10

    all | all | all

  • ubuntu•tomcat11

    all | all

  • ubuntu•tomcat8

    all

  • ubuntu•tomcat9

    all | all | all | all

  • org.apache.tomcat•tomcat

    ≥ 9.0.0.M23, < 9.0.116 | ≥ 8.5.30, < 9.0.116 | ≥ 10.1.0-M1, < 10.1.53 | ≥ 11.0.0-M1, < 11.0.20

  • org.apache.tomcat•tomcat-catalina

    ≥ 9.0.0.M23, < 9.0.116 | ≥ 8.5.30, < 9.0.116 | ≥ 10.1.0-M1, < 10.1.53 | ≥ 11.0.0-M1, < 11.0.20

  • org.apache.tomcat.embed•tomcat-embed-core

    ≥ 9.0.0.M23, < 9.0.116 | ≥ 8.5.30, < 9.0.116 | ≥ 10.1.0-M1, < 10.1.53 | ≥ 11.0.0-M1, < 11.0.20

References (7)