Staging Environment: Content and features may be unstable or change without notice.
Advisory details: gitlab / maven/org.apache.tomcat/tomcat/CVE-2026-24880
Advisory ID gitlab/maven/org.apache.tomcat/tomcat/CVE-2026-24880
Aliases CVE-2026-24880
GHSA-563x-q5rq-57qp
Summary Apache Tomcat has an HTTP Request/Response Smuggling vulnerability Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat via invalid chunk extension. 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.M1 through 9.0.115, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other, unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.20, 10.1.52 or 9.0.116, which fix the issue.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (3)
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.tomcat/tomcat/CVE-2026-24880.yml
Reference id Reference type URL
https://github.com/apache/tomcat/commit/1b586d6aa8ae65726da5fa8799427b5d4718478a
https://github.com/apache/tomcat/commit/1e71441a15972f56e661b0b549fb9e5d838b83bb
https://github.com/apache/tomcat/commit/2cb06c34f661ca42f7570bbcc21e99806184bcc5
https://github.com/apache/tomcat/commit/6d478dbe18b7c4bb671c30fedf130309b0dab77c
https://github.com/apache/tomcat/commit/f07df938d00f7419b40fa65aa912966d0efac522
https://github.com/apache/tomcat/commit/fde1a8235fb73125217bd41e162aa0a113f33552
https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.53
https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.20
https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.116
https://www.herodevs.com/vulnerability-directory/cve-2026-24880
2c682qnlg2tv4o5knlggqbl9yc2gb5sn Advisory https://lists.apache.org/thread/2c682qnlg2tv4o5knlggqbl9yc2gb5sn
CVE-2026-24880 https://nvd.nist.gov/vuln/detail/CVE-2026-24880
GHSA-563x-q5rq-57qp https://github.com/advisories/GHSA-563x-q5rq-57qp
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.tomcat/tomcat/CVE-2026-24880.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-10T18:33:19Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/24xxx/CVE-2026-24880.json

Source Advisory: vulnrichment/CVE-2026-24880

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]