CVE-2026-24880

EUVD-2026-21006

09.04.2026, 20:16

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.

HTTP Request/Response Smuggling

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 47%

Affected Products (NVD)

Vendor	Product	Version
apache	tomcat	9.0.0 ≤ 𝑥 < 9.0.116
apache	tomcat	10.1.0 ≤ 𝑥 < 10.1.53
apache	tomcat	11.0.0 ≤ 𝑥 < 11.0.20

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

tomcat10

bookworm	vulnerable
bookworm (security)	vulnerable
forky	10.1.54-1 fixed
sid	10.1.54-1 fixed
trixie	vulnerable
trixie (security)	vulnerable

tomcat11

forky	11.0.21-1 fixed
sid	11.0.22-2 fixed
trixie	vulnerable
trixie (security)	vulnerable

tomcat9

bookworm	9.0.70-2 fixed
bullseye	vulnerable
bullseye (security)	9.0.107-0+deb11u2 fixed
forky	9.0.115-1 fixed
sid	9.0.115-1 fixed
trixie	9.0.95-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

tomcat6

jammy	dne
noble	dne
questing	dne
resolute	dne
trusty	needs-triage
xenial	ignored

tomcat7

bionic	needs-triage
jammy	dne
noble	dne
questing	dne
resolute	dne
trusty	needs-triage
xenial	ignored

tomcat8

bionic	needs-triage
jammy	dne
noble	dne
questing	dne
resolute	dne
xenial	needs-triage

tomcat9

bionic	needs-triage
focal	needs-triage
jammy	needs-triage
noble	needs-triage
questing	needs-triage
resolute	needs-triage

tomcat10

jammy	dne
noble	needs-triage
questing	needs-triage
resolute	needs-triage

tomcat11

jammy	dne
noble	dne
questing	needs-triage
resolute	needs-triage

openSUSE / SLES Releases

openSUSE Product

Release

tomcat

suse enterprise sap 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP7	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP7	9.0.117-150200.105.1 fixed

tomcat-admin-webapps

suse enterprise sap 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP7	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP7	9.0.117-150200.105.1 fixed

tomcat-el-3_0-api

suse enterprise sap 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP7	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP7	9.0.117-150200.105.1 fixed

tomcat-jsp-2_3-api

suse enterprise sap 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP7	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP7	9.0.117-150200.105.1 fixed

tomcat-lib

suse enterprise sap 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP7	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP7	9.0.117-150200.105.1 fixed

tomcat-servlet-4_0-api

suse enterprise sap 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP7	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP7	9.0.117-150200.105.1 fixed

tomcat-webapps

suse enterprise sap 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise sap 15 SP7	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP4	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP5	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP6	9.0.117-150200.105.1 fixed
suse enterprise server 15 SP7	9.0.117-150200.105.1 fixed

tomcat10

suse enterprise sap 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP7	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP7	10.1.54-150200.5.64.1 fixed

tomcat10-admin-webapps

suse enterprise sap 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP7	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP7	10.1.54-150200.5.64.1 fixed

tomcat10-el-5_0-api

suse enterprise sap 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP7	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP7	10.1.54-150200.5.64.1 fixed

tomcat10-jsp-3_1-api

suse enterprise sap 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP7	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP7	10.1.54-150200.5.64.1 fixed

tomcat10-lib

suse enterprise sap 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP7	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP7	10.1.54-150200.5.64.1 fixed

tomcat10-servlet-6_0-api

suse enterprise sap 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP7	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP7	10.1.54-150200.5.64.1 fixed

tomcat10-webapps

suse enterprise sap 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise sap 15 SP7	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP5	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP6	10.1.54-150200.5.64.1 fixed
suse enterprise server 15 SP7	10.1.54-150200.5.64.1 fixed

tomcat11

suse enterprise sap 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise sap 15 SP7	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP7	11.0.21-150600.13.18.1 fixed

tomcat11-admin-webapps

suse enterprise sap 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise sap 15 SP7	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP7	11.0.21-150600.13.18.1 fixed

tomcat11-el-6_0-api

suse enterprise sap 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise sap 15 SP7	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP7	11.0.21-150600.13.18.1 fixed

tomcat11-jsp-4_0-api

suse enterprise sap 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise sap 15 SP7	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP7	11.0.21-150600.13.18.1 fixed

tomcat11-lib

suse enterprise sap 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise sap 15 SP7	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP7	11.0.21-150600.13.18.1 fixed

tomcat11-servlet-6_1-api

suse enterprise sap 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise sap 15 SP7	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP7	11.0.21-150600.13.18.1 fixed

tomcat11-webapps

suse enterprise sap 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise sap 15 SP7	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP6	11.0.21-150600.13.18.1 fixed
suse enterprise server 15 SP7	11.0.21-150600.13.18.1 fixed

Common Weakness Enumeration

CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

Vulnerability Media Exposure

[GERMAN] Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye und Jira): Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence, Atlassian Crucible, Atlassian Fisheye und Atlassian Jira ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um einen Cross-Site Scripting Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.
Published: 2026-05-19T22:00:00+00:00

References

https://lists.apache.org/thread/2c682qnlg2tv4o5knlggqbl9yc2gb5sn

http://www.openwall.com/lists/oss-security/2026/04/09/20