{"id":"CVE-2025-26803","aliases":["BIT-passenger-2025-26803","BIT-passenger-apache-module-2025-26803","BIT-passenger-nginx-module-2025-26803","GHSA-2cj2-qqxj-5m3r"],"url":"https://o3.security/vulnerability/CVE-2025-26803","summary":"Phusion Passenger denial of service ","details":"The http parser in Phusion Passenger 6.0.21 through 6.0.25 before 6.0.26 allows a denial of service during parsing of a request with an invalid HTTP method.","published":"2025-02-24T00:00:00Z","modified":"2026-08-12T15:16:21.492517Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":{"score":0.00605,"percentile":0.47447,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"passenger","fixedVersion":"6.0.26"}],"fix":{"url":"https://github.com/phusion/passenger/commit/bb15591646687064ab2d578d5f9660b2a4168017","label":"phusion/passenger@bb15591"},"references":[{"type":"WEB","url":"https://github.com/phusion/passenger/compare/release-6.0.25...release-6.0.26"},{"type":"WEB","url":"https://github.com/phusion/passenger/releases/tag/release-6.0.26"},{"type":"WEB","url":"https://www.phusionpassenger.com/support"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/26xxx/CVE-2025-26803.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-26803"},{"type":"FIX","url":"https://github.com/phusion/passenger/commit/bb15591646687064ab2d578d5f9660b2a4168017"},{"type":"ARTICLE","url":"https://blog.phusion.nl/2025/02/19/passenger-6-0-26/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T15:16:21.492517Z"}}