🛡️ CVE-2023-45648
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-20 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE CWE-20
Public Exploit ✅ No
Source NVD
Published 2023-10-10
Updated 2026-06-15
Modified 2025-08-07
Fix URL N/A

Affected Packages

Software From version Fixed in
debian-linux
org.apache.tomcat:tomcat 8.5.0 8.5.94
org.apache.tomcat:tomcat-coyote 8.5.0 8.5.94
org.apache.tomcat.embed:tomcat-embed-core 8.5.0 8.5.94
tomcat

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