CVE-2026-53404 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-53404
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.41 Probability of exploitation activity being observed over the next 30 days (33rd percentile)
CVSS score for CVE-2026-53404
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
7.3 High
Products affected by CVE-2026-53404
Tomcat 9.0.14
Tomcat 9.0.16
Tomcat 9.0.17
Tomcat 9.0.19
Tomcat 9.0.2
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-53404 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 3,588 27.70%
CN 2,878 22.22%
DE 643 4.96%
IN 640 4.94%
KR 460 3.55%
BR 380 2.93%
SG 337 2.60%
JP 292 2.25%
FR 283 2.18%
HK 264 2.04%

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CVE-2026-53404 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 7,898 79.09%
Telecommunications 1,328 13.30%
Education 270 2.70%
Government/Politics 127 1.27%
Business Services 77 0.77%
Finance 64 0.64%
Manufacturing 37 0.37%
Retail 32 0.32%
Healthcare/Wellness 27 0.27%
Transportation 26 0.26%

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