{"id":"CVE-2021-30130","aliases":["CLSA-2026-1779065206","DEBIAN-CVE-2021-30130","DLA-3197-1","DLA-3198-1","EUVD-2021-0879","GHSA-vf4w-fg7r-5v94","UBUNTU-CVE-2021-30130","USN-7404-1"],"status":"published","title":"Improper Certificate Validation in phpseclib","description":"phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature 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Party Advisory","fix","web","report"]},{"url":"https://github.com/phpseclib/phpseclib/releases/tag/3.0.7","tags":["x_transferred","Release Notes","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/phpseclib/phpseclib/releases/tag/2.0.31","tags":["x_transferred","Release Notes","Third Party Advisory","advisory","web","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00024.html","tags":["mailing-list","x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00025.html","tags":["mailing-list","x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30130","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2021-30130.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vf4w-fg7r-5v94"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-30130","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-30130","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-30130","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7404-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-52892","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2024-27354","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2024-27355","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-30130","description":"phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.","status":"published","published":"2021-04-06T00:00:00Z","modified":"2024-08-03T22:24:59.565Z","updated_at":"2026-11-02T14:33:02.20241Z"}],"euvd":[{"id":"EUVD-2021-0879","description":"phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.","status":"published","published":"2021-04-06T00:00:00Z","modified":"2024-08-03T22:24:59Z","updated_at":"2026-11-03T03:24:43.413555Z"}],"ghsa":[{"id":"GHSA-vf4w-fg7r-5v94","title":"Improper Certificate Validation in phpseclib","description":"phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.","status":"published","published":"2021-04-07T20:56:55Z","modified":"2024-02-07T18:14:47Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-295","CWE-347"],"updated_at":"2026-11-02T14:37:36.076201Z"}],"nvd":[{"id":"CVE-2021-30130","description":"phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.","status":"published","published":"2021-04-06T15:15:13.497Z","modified":"2026-06-17T03:49:43.327Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:06:51.610648Z"}],"osv":[{"id":"CVE-2021-30130","description":"phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.","status":"published","published":"2021-04-06T15:15:13.497Z","modified":"2026-10-20T10:54:40.184511316Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:19.483607Z"},{"id":"DEBIAN-CVE-2021-30130","description":"phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature 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verification.","status":"published","published":"2021-04-06T15:15:00Z","modified":"2026-02-04T04:40:37.802161Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:27.332852Z"},{"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":"DLA-3197-1","title":"phpseclib - security update","status":"published","published":"2022-11-17T00:00:00Z","modified":"2026-03-09T01:21:37.092944Z","updated_at":"2026-11-02T15:46:11.734021Z"},{"id":"DLA-3198-1","title":"php-phpseclib - security update","status":"published","published":"2022-11-17T00:00:00Z","modified":"2026-03-09T01:17:48.700789Z","updated_at":"2026-11-02T15:46:11.734021Z"},{"id":"USN-7404-1","title":"phpseclib vulnerabilities","description":"It was discovered that phpseclib did not correctly handle RSA PKCS#1\nv1.5 signature verification. An attacker could possibly use this issue to\nbypass authentication. This issue only affected Ubuntu 20.04 LTS.\n(CVE-2021-30130)\n\nIt was discovered that phpseclib did not correctly handle certain\ncharacters in certain TLS fields, which could lead to name confusion.\nAn attacker could possibly use this issue to bypass authentication.\n(CVE-2023-52892)\n\nIt was discovered that phpseclib incorrectly limited the size of prime\nnumbers generated by isPrime. An attacker could possibly use this issue\nto cause a denial of service. (CVE-2024-27354)\n\nIt was discovered that phpseclib did not correctly handle processing the\nASN.1 object identifier of a certificate. An attacker could possibly use\nthis issue to cause a denial of service. This issue only affected\nUbuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2024-27355)\n","status":"published","published":"2025-04-02T01:35:46Z","modified":"2026-06-25T13:32:30.293856464Z","updated_at":"2026-11-02T16:58:19.988474Z"}]}}