{"basis":"claimed","id":"CVE-2025-31650","name":"Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame","vendorProject":"Apache Software Foundation","product":"Apache Tomcat","publishedAt":"2025-04-28","cvss":{"score":7.5,"severity":"HIGH","version":"3.1"},"exploited":null,"epss":{"score":0.61322,"percentile":0.99164,"date":"2026-11-02"},"coverage":{"cloudflare":{"status":"off","firstOn":"2025-07-28","daysToRule":91},"aws":{"status":"none","firstOn":null,"daysToRule":null},"azure":{"status":"none","firstOn":null,"daysToRule":null},"google":{"status":"none","firstOn":null,"daysToRule":null},"fastly":{"status":"no_history","firstOn":null,"daysToRule":null},"f5":{"status":"none","firstOn":null,"daysToRule":null},"akamai":{"status":"no_source","firstOn":null,"daysToRule":null},"crs":{"status":"none","firstOn":null,"daysToRule":null}},"title":"Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame","description":"Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service.\n\nThis issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5.\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: 8.5.90 though 8.5.100.\n\n\nUsers are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.","cwes":["CWE-459"],"vendors":[{"vendor":"cloudflare","status":"off","basis":"claimed","firstOn":"2025-07-28","firstIsNew":true,"daysToRule":91,"daysAtMost":null,"freePlan":false,"claims":[{"id":"1da907e92ff03c513f61418dacb44414c130dd040cbb072ebe6553dc5716edec","cve_id":"CVE-2025-31650","vendor":"cloudflare","product":"Cloudflare Managed Ruleset","rule_id":"fd360d8fd9994e6bab6fb06067fae7f7","rule_name":"Apache Tomcat - DoS - CVE:CVE-2025-31650","change":"new","default_action":"Disabled","published_on":"2025-07-28","source_url":"https://developers.cloudflare.com/changelog/post/2025-07-28-waf-release/","source_title":"WAF Release - 2025-07-28","excerpt":"Apache Tomcat - DoS - CVE:CVE-2025-31650. Previous action: Log. New action: Disabled. This is a New Detection","first_seen_at":"2026-11-02T21:00:16.350Z"}]},{"vendor":"aws","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"azure","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"google","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"fastly","status":"no_history","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"f5","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"akamai","status":"no_source","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"crs","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]}],"updatedAt":"2026-11-02T21:17:16.628Z","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial"},"measured":[],"social":{"total":0,"first_seen":null,"daily":[{"day":"2026-10-21","posts":0},{"day":"2026-10-22","posts":0},{"day":"2026-10-23","posts":0},{"day":"2026-10-24","posts":0},{"day":"2026-10-25","posts":0},{"day":"2026-10-26","posts":0},{"day":"2026-10-27","posts":0},{"day":"2026-10-28","posts":0},{"day":"2026-10-29","posts":0},{"day":"2026-10-30","posts":0},{"day":"2026-10-31","posts":0},{"day":"2026-11-01","posts":0},{"day":"2026-11-02","posts":0},{"day":"2026-11-03","posts":0}],"top_posts":[],"exploit_repositories":[]}}