HIGHMaven →
Apache Tomcat Coyote vulnerable to Denial of Service via excessive HTTP/2 streams
Apache Tomcat Coyote vulnerable to Denial of Service via excessive HTTP/2 streams
Affected packages
- org.apache.tomcat.embed:tomcat-embed-core— ≥ 8.5.0
- org.apache.tomcat:tomcat-coyote— 11.0.0-M1 → 11.0.9
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://nvd.nist.gov/vuln/detail/CVE-2025-53506
- https://github.com/apache/tomcat/commit/2aa6261276ebe50b99276953591e3a2be7898bdb
- https://github.com/apache/tomcat/commit/434772930f362145516dd60681134e7f0cf8115b
- https://github.com/apache/tomcat/commit/be8f330f83ceddaf3baeed57522e571572b6b99b
- https://github.com/apache/tomcat
- https://lists.apache.org/thread/p09775q0rd185m6zz98krg0fp45j8kr0
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html
- http://www.openwall.com/lists/oss-security/2025/07/10/13
Structured record: https://osv.dev/vulnerability/GHSA-25xr-qj8w-c4vf
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