{"id":"CVE-2026-44167","aliases":["CLSA-2026-1779065206","DEBIAN-CVE-2026-44167","EUVD-2026-29724","GHSA-3qpq-r242-jqj7","UBUNTU-CVE-2026-44167","USN-8830-1"],"status":"published","title":"phpseclib: CVE-2024-27355 mitigation bypass — OID amplification DoS in ASN1::decodeOID()","description":"phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc). This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00201,"percentile":0.1002,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2026-05-05T21:17:57Z","modified":"2026-10-28T02:30:52Z","fixes":[{"ecosystem":"Packagist","package":"phpseclib/phpseclib","fixed_in":["2.0.54","3.0.52","1.0.29"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"php-phpseclib","fixed_in":["2.0.42-1+deb12u5"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"php-phpseclib","fixed_in":["2.0.48-3+deb13u3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"php-phpseclib","fixed_in":["2.0.54-1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"php-phpseclib3","fixed_in":["3.0.19-1+deb12u6"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"php-phpseclib3","fixed_in":["3.0.43-2+deb13u3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"php-phpseclib3","fixed_in":["3.0.52-1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"phpseclib","fixed_in":["1.0.20-1+deb12u5"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"phpseclib","fixed_in":["1.0.23-6+deb13u3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"php-phpseclib","fixed_in":["2.0.1-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"php-phpseclib","fixed_in":["2.0.9-1ubuntu0.1~esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"php-phpseclib","fixed_in":["2.0.23-2ubuntu0.1~esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"php-phpseclib","fixed_in":["2.0.36-1ubuntu0.1~esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:24.04:LTS","package":"php-phpseclib","fixed_in":["2.0.47-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:26.04:LTS","package":"php-phpseclib","fixed_in":["2.0.51-1ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"phpseclib/phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"last_affected":"2.0.53"},{"fixed":"2.0.54"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"phpseclib/phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"last_affected":"3.0.51"},{"fixed":"3.0.52"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"phpseclib/phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.1.1"},{"last_affected":"1.0.28"},{"fixed":"1.0.29"}]}]},{"source":"osv","ecosystem":"TuxCare:Packagist","package":"phpseclib/phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.3.10"},{"fixed":"0.3.10-p1+tuxcare"}]}],"versions":["0.3.10"],"bundled":4},{"source":"osv","ecosystem":"Debian:12","package":"php-phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.42-1+deb12u5"}]}],"versions":["2.0.42-1","2.0.42-1+deb12u1","2.0.42-1+deb12u2","2.0.42-1+deb12u3"]},{"source":"osv","ecosystem":"Debian:13","package":"php-phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.48-3+deb13u3"}]}],"versions":["2.0.48-3","2.0.48-3+deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"php-phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.54-1"}]}],"versions":["2.0.48-3","2.0.49-1","2.0.50-1","2.0.51-1","2.0.52-1","2.0.53-1"]},{"source":"osv","ecosystem":"Debian:12","package":"php-phpseclib3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.19-1+deb12u6"}]}],"versions":["3.0.19-1","3.0.19-1+deb12u1","3.0.19-1+deb12u2","3.0.19-1+deb12u3","3.0.19-1+deb12u4"]},{"source":"osv","ecosystem":"Debian:13","package":"php-phpseclib3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.43-2+deb13u3"}]}],"versions":["3.0.43-2","3.0.43-2+deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"php-phpseclib3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.52-1"}]}],"versions":["3.0.43-2","3.0.44-1","3.0.44-2","3.0.45-1","3.0.46-1","3.0.46-2","3.0.47-1","3.0.48-1","3.0.49-1","3.0.50-1","3.0.51-1"]},{"source":"osv","ecosystem":"Debian:12","package":"phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.20-1+deb12u5"}]}],"versions":["1.0.20-1","1.0.20-1+deb12u1","1.0.20-1+deb12u2","1.0.20-1+deb12u3"]},{"source":"osv","ecosystem":"Debian:13","package":"phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.23-6+deb13u3"}]}],"versions":["1.0.23-6","1.0.23-6+deb13u1"]},{"source":"osv","ecosystem":"Packagist","package":"phpseclib/phpseclib","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.1.1"},{"fixed":"1.0.29"}]}],"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",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CVE-2024-27355 mitigation bypass — OID amplification DoS in ASN1::decodeOID()","description":"phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc). This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52.","status":"published","published":"2026-05-12T17:22:14.764Z","modified":"2026-05-14T19:24:44.689Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T13:42:49.132798Z"}],"euvd":[{"id":"EUVD-2026-29724","description":"phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc). This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52.","status":"published","published":"2026-05-12T17:22:14Z","modified":"2026-05-14T19:24:44Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T19:04:30.595644Z"}],"ghsa":[{"id":"GHSA-3qpq-r242-jqj7","title":"phpseclib has a CVE-2024-27355 mitigation bypass — OID amplification DoS in ASN1::decodeOID()","description":"### Impact\nAnyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc)\n\n### Patches\nhttps://github.com/phpseclib/phpseclib/commit/d53d2021bcb9f6a04d5d44ec99e6bbef219a71bc\n\n### Workarounds\nNo.\n\n### References\nhttps://github.com/phpseclib/phpseclib/commit/d53d2021bcb9f6a04d5d44ec99e6bbef219a71bc","status":"published","published":"2026-05-05T21:17:57Z","modified":"2026-05-13T16:27:01Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:40:09.033429Z"}],"nvd":[{"id":"CVE-2026-44167","description":"phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc). This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52.","status":"published","published":"2026-05-12T18:17:29.273Z","modified":"2026-06-17T10:50:18.757Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:12:18.613259Z"}],"osv":[{"id":"CVE-2026-44167","title":"phpseclib: CVE-2024-27355 mitigation bypass — OID amplification DoS in ASN1::decodeOID()","description":"phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc). This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52.","status":"published","published":"2026-05-12T17:22:14.764Z","modified":"2026-10-28T02:30:52.175702554Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:45:04.820169Z"},{"id":"DEBIAN-CVE-2026-44167","description":"phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc). This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52.","status":"published","published":"2026-05-12T18:17:29.273Z","modified":"2026-10-01T03:03:14.763281303Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:55.669088Z"},{"id":"GHSA-3qpq-r242-jqj7","title":"phpseclib has a CVE-2024-27355 mitigation bypass — OID amplification DoS in ASN1::decodeOID()","description":"### Impact\nAnyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc)\n\n### Patches\nhttps://github.com/phpseclib/phpseclib/commit/d53d2021bcb9f6a04d5d44ec99e6bbef219a71bc\n\n### Workarounds\nNo.\n\n### References\nhttps://github.com/phpseclib/phpseclib/commit/d53d2021bcb9f6a04d5d44ec99e6bbef219a71bc","status":"published","published":"2026-05-05T21:17:57Z","modified":"2026-09-10T03:51:04.444822997Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:36.092962Z"},{"id":"UBUNTU-CVE-2026-44167","description":"phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc). This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52.","status":"published","published":"2026-05-12T18:17:00Z","modified":"2026-10-17T12:58:20.822837238Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:22.075798Z"},{"id":"CLSA-2026-1779065206","title":"TuxCare security update for phpseclib/phpseclib (4 CVEs)","description":"TuxCare rebuilt phpseclib/phpseclib to address 4 CVEs. Fixed in 0.3.10-p1+tuxcare.","status":"published","published":"2026-08-04T14:52:32Z","modified":"2026-10-15T09:47:41.999375702Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"USN-8830-1","title":"php-phpseclib vulnerabilities","description":"It was discovered that phpseclib did not perform constant-time padding\nvalidation when using AES in CBC mode. A remote attacker could possibly\nuse this issue to obtain sensitive information. (CVE-2026-32935)\n\nIt was discovered that phpseclib did not use a constant-time comparison\nwhen validating SSH packet authentication codes. A remote attacker could\npossibly use this issue to obtain sensitive information. (CVE-2026-40194)\n\nIt was discovered that phpseclib did not properly limit object identifier\nlengths when parsing ASN.1 data. An attacker could possibly use this issue\nto cause phpseclib to use excessive resources, leading to a denial of\nservice. (CVE-2026-44167)","status":"published","published":"2026-09-28T13:56:03Z","modified":"2026-09-28T22:57:39.805761921Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}