CVE-2026-41293

⛔ critical

Summary

Improper Input Validation vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 10.0.0-M1 through 10.0.27. Older, end of support versions may also be affected. Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.

CVSS Score

9.8

Critical

EPSS Score

0.2

Exploit Probability

Published Date

2026-05-12

First Seen: 2026-05-17

📊 Relative Risk Intelligence

This CVE is Very High Risk - more severe than 90.5% of all 344,912 vulnerabilities in our database.

#32,829

Top 10% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: May 14, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Total

Complete system compromise possible

🏆 Discovered By

Dawit Jeong (@dawitngoliath)

SSVC data provided by CISA

Last Modified 2026-05-15

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-20

📦 Affected Products 5

Vendor	Product	Status	Affected Versions
apache	tomcat	Affected	> 10.0.0 < 10.0.27
apache	tomcat	Affected	> 10.1.0 < 10.1.55
apache	tomcat	Affected	> 11.0.0 < 11.0.22
apache	tomcat	Affected	> 8.5.0 < 8.5.100
apache	tomcat	Affected	> 9.0.0 < 9.0.118

🔗 References 2

https://lists.apache.org/thread/qwg0q16z7xkb2qrr853w...

Mailing List Vendor Advisory

http://www.openwall.com/lists/oss-security/2026/05/1...

Mailing List 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-2026-53434	⛔ critical	9.1	0.4	Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connect...	2026-06-29

These CVEs affect the same products