CVE-2026-53404

HIGH
MEDIUM Priority: 0.05 BB Relevance: 75/100
Published: 2026-06-29 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: Low
I: Low
A: Low

Description

Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
apache tomcat 8.5.0 – 8.5.100
apache tomcat 9.0.0 – 9.0.119
apache tomcat 10.1.0 – 10.1.56
apache tomcat 11.0.0 – 11.0.23

References & Advisories (2)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploitation Probability

0.65%
Raw Score 0.006520
Percentile 51.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00652
2026-10-28
0.00652

Intelligence Sources

nvd ref →