{"id":"GHSA-f2qx-66wf-wvvx","aliases":["CVE-2024-27355"],"title":"phpseclib guardrails needed on OID length","description":"### Impact\nAny application using that loads untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc).\n\n### Patches\nhttps://github.com/phpseclib/phpseclib/commit/e32531001b4d62c66c3d824ccef54ffad835eb59\n\n### Workarounds\nNo.\n\n### Resources\nhttps://github.com/phpseclib/phpseclib/commit/e32531001b4d62c66c3d824ccef54ffad835eb59\nhttps://www.usenix.org/system/files/conference/usenixsecurity25/sec25cycle1-prepub-599-shi-bing.pdf","severity":"high","score":7.5,"published":"2026-05-08T18:24:30.000Z","modified":"2026-05-08T18:41:11.562Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"phpseclib/phpseclib","ranges":[{"events":[{"introduced":"2.0.0"},{"fixed":"2.0.47"}],"type":"ECOSYSTEM"}],"versions":["2.0.0","2.0.1","2.0.10","2.0.11","2.0.12","2.0.13","2.0.14","2.0.15","2.0.16","2.0.17","2.0.18","2.0.19","2.0.2","2.0.20","2.0.21","2.0.22","2.0.23","2.0.24","2.0.25","2.0.26","2.0.27","2.0.28","2.0.29","2.0.3","2.0.30","2.0.31","2.0.32","2.0.33","2.0.34","2.0.35","2.0.36","2.0.37","2.0.38","2.0.39","2.0.4","2.0.40","2.0.41","2.0.42","2.0.43","2.0.44","2.0.45","2.0.46","2.0.5","2.0.6","2.0.7","2.0.8","2.0.9"],"fixed":["2.0.47"]},{"ecosystem":"Packagist","name":"phpseclib/phpseclib","ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.0.36"}],"type":"ECOSYSTEM"}],"versions":["3.0.0","3.0.1","3.0.10","3.0.11","3.0.12","3.0.13","3.0.14","3.0.15","3.0.16","3.0.17","3.0.18","3.0.19","3.0.2","3.0.20","3.0.21","3.0.22","3.0.23","3.0.3","3.0.33","3.0.34","3.0.35","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9"],"fixed":["3.0.36"]},{"ecosystem":"Packagist","name":"phpseclib/phpseclib","ranges":[{"events":[{"introduced":"0.1.1"},{"fixed":"1.0.23"}],"type":"ECOSYSTEM"}],"versions":["0.3.0","0.3.1","0.3.10","0.3.5","0.3.6","0.3.7","0.3.8","0.3.9","1.0.0","1.0.1","1.0.10","1.0.11","1.0.12","1.0.13","1.0.14","1.0.15","1.0.16","1.0.17","1.0.18","1.0.19","1.0.2","1.0.20","1.0.21","1.0.22","1.0.3","1.0.4","1.0.5","1.0.6","1.0.7","1.0.8","1.0.9"],"fixed":["1.0.23"]}],"references":["https://github.com/phpseclib/phpseclib/security/advisories/GHSA-f2qx-66wf-wvvx","https://nvd.nist.gov/vuln/detail/CVE-2024-27355","https://github.com/phpseclib/phpseclib/commit/e32531001b4d62c66c3d824ccef54ffad835eb59","https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b","https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2024-27355.yaml","https://github.com/phpseclib/phpseclib","https://github.com/phpseclib/phpseclib/blob/978d081fe50ff92879c50ff143c62a143edb0117/phpseclib/File/ASN1.php#L1129","https://lists.debian.org/debian-lts-announce/2024/03/msg00002.html","https://lists.debian.org/debian-lts-announce/2024/03/msg00003.html"],"sources":[{"name":"OSV","id":"GHSA-f2qx-66wf-wvvx","modified":"2026-05-08T18:41:11.562325Z","url":"https://osv.dev/vulnerability/GHSA-f2qx-66wf-wvvx"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}]}