CVE-2026-53434

⛔ critical

Summary

Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue.

CVSS Score

9.1

Critical

EPSS Score

0.4

Exploit Probability

Published Date

2026-06-29

First Seen: 2026-06-30

📊 Relative Risk Intelligence

This CVE is High Risk - more severe than 87.6% of all 344,912 vulnerabilities in our database.

#42,747

Top 25% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jun 30, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2026-07-02

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE IDs (Weakness Types)

CWE-390

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
apache	tomcat	Affected	> 10.1.0 < 10.1.56
apache	tomcat	Affected	> 11.0.0 < 11.0.23
apache	tomcat	Affected	> 9.0.83 < 9.0.119

🔗 References 2

https://lists.apache.org/thread/x510lbq0sfrd1qyo7q3r...

Vendor Advisory Mailing List

http://www.openwall.com/lists/oss-security/2026/06/2...

Third Party Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-66299	⚠️ high	7.5	0.5	Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue affects Apache To...	2026-07-28
CVE-2026-59083	⛔ critical	9.1	0.4	Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valve allowed security constra...	2026-07-14
CVE-2026-59084	⛔ critical	9.1	0.4	Insufficient Technical Documentation vulnerability in Apache Tomcat since the requirements to securely configure the Enc...	2026-07-14
CVE-2026-50229	🔶 medium	6.1	0.4	Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example ...	2026-06-29
CVE-2026-53404	⚠️ high	7.3	0.4	Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first cond...	2026-06-29
CVE-2026-55276	⛔ critical	9.1	0.4	Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty authorisa...	2026-06-29

These CVEs affect the same products