Medium severity · published Apr 9, 2026
CVE-2026-25854
Apache Tomcat: Occasionally open redirect
6.1
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TO
Tomcat · Apache
11.0.0-M1 through 11.0.18; 10.1.0-M1 through 10.1.52; 9.0.0.M23 through 9.0.115; 8.5.30 through 8.5.100 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25854
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-25854
Mailing List
https://lists.apache.org/thread/ghct3b6o74bp2vm7q875s1zh0dqrz3h0
Mailing List
http://www.openwall.com/lists/oss-security/2026/04/09/21
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