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CVE-2026-43515 is a critical severity vulnerability with a CVSS score of 9.1. No known exploits currently, and patches are available.
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Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
Versions Affected: Apache Tomcat 11.0.0-M1 to 11.0.21 Apache Tomcat 10.1.0-M1 to 10.1.54 Apache Tomcat 9.0.0.M1 to 9.0.117 Older, unsupported versions may also be affected
Description: When multiple security constraints defined an HTTP method constraint for the same extension pattern, only the first method constraint was applied.
Mitigation: Users of the affected versions should apply one of the following mitigations: