CVE-2026-24880
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 7.5
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS probability
- 0.52%
- CWE
- CWE-444
- Published
- 2026-04-09
- Last modified
- 2026-04-10
Affected products
- Apache Software Foundation Apache Tomcat
- Apache Software Foundation Apache Tomcat
- Apache Software Foundation Apache Tomcat
- Apache Software Foundation Apache Tomcat
- Apache Software Foundation Apache Tomcat
- Apache Software Foundation Apache Tomcat
- Apache Software Foundation Apache Tomcat
Weakness type
Related vulnerabilities
- CVE-2026-81356 — Visual Studio Code Security Feature Bypass Vulnerability
- CVE-2026-19203 — A client may issue specially crafted HTTP/1.1 chunked requests to a Jetty server that cause Jetty...
- CVE-2026-18540 — undici vulnerable to downstream response splitting via retry interceptor
- CVE-2026-84380 — HTTPX2: Conflicting Content-Length and Transfer-Encoding headers can be auto-generated
- CVE-2026-84363 — Hono: Query parser reads parameters after the URL fragment, causing cache-key and proxy interpretation differentials
- CVE-2026-78605 — Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') in Elasticsearch Leading to Information Disclosure
- CVE-2026-73812 — inets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-Length
- CVE-2026-73276 — inets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping i