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CVE

CVE-2026-24880

Apache Tomcat has an HTTP Request/Response Smuggling vulnerability
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CVE

CVE-2026-24880

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-24880, 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://github.com/apache/tomcat, https://lists.apache.org/thread/2c682qnlg2tv4o5knlggqbl9yc2gb5sn, https://tomcat.apache.org/security-10.html#FixedinApacheTomcat10.1.53, https://tomcat.apache.org/security-11.html#FixedinApacheTomcat11.0.20, https://tomcat.apache.org/security-9.html#FixedinApacheTomcat9.0.116, https://www.herodevs.com/vulnerability-directory/cve-2026-24880, http://www.openwall.com/lists/oss-security/2026/04/09/20

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00176%
EPSS Percentile
0.38938%
Introduced Version
7.0.0,11.0.3,10.1.35,9.0.99,11.0.0-M1,10.0.0-M1,6.0.13,5.5.4,3.3.2,7.0.35,0
Fix Available
9.0.116,11.0.20,10.1.53,2025.0.8-r10,2025.1.6-r8,2025.2.4-r4,2025.0.8-r12,2025.1.6-r9,2025.2.4-r5,5.5.0-r8,5.5.0-r4

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