{"id":"CVE-2021-4097","aliases":["GHSA-8qv8-fq5w-p966"],"url":"https://o3.security/vulnerability/CVE-2021-4097","summary":"phpservermon is vulnerable to CRLF Injection","details":"phpservermon is vulnerable to Improper Neutralization of CRLF Sequences","published":"2021-12-12T00:15:07.743Z","modified":"2026-07-08T05:57:37.831181268Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"},"epss":{"score":0.00843,"percentile":0.56161,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"phpservermon/phpservermon","fixedVersion":null}],"fix":{"url":"https://github.com/phpservermon/phpservermon/commit/162bba0046fcda1580f4fbc7b9ababe3c7c13ce4","label":"phpservermon/phpservermon@162bba0"},"references":[{"type":"FIX","url":"https://github.com/phpservermon/phpservermon/commit/162bba0046fcda1580f4fbc7b9ababe3c7c13ce4"},{"type":"FIX","url":"https://huntr.dev/bounties/d617ced7-be06-4e34-9db0-63d45c003a43"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:57:37.831181268Z"}}