{"id":"CVE-2026-41564","aliases":["ALPINE-CVE-2026-41564","DEBIAN-CVE-2026-41564","EUVD-2026-25201","GHSA-24c2-gp6c-24c6","UBUNTU-CVE-2026-41564","openSUSE-SU-2026:10773-1","openSUSE-SU-2026:20936-1"],"status":"published","title":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking","description":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking.\n\nThe Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery.\n\nThis affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.00431,"percentile":0.37543,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-335","CWE-338"],"published":"2026-04-23T07:29:26Z","modified":"2026-10-28T02:31:00Z","fixes":[{"ecosystem":"Alpine:v3.20","package":"perl-cryptx","fixed_in":["0.088-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"perl-cryptx","fixed_in":["0.088-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"perl-cryptx","fixed_in":["0.088-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"perl-cryptx","fixed_in":["0.088-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"perl-cryptx","fixed_in":["0.088-r0"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libcryptx-perl","fixed_in":["0.085-1+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libcryptx-perl","fixed_in":["0.087-2"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"perl-CryptX","fixed_in":["0.89.0-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.20","package":"perl-cryptx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.088-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"perl-cryptx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.088-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"perl-cryptx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.088-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"perl-cryptx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.088-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"perl-cryptx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.088-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.077-1","0.078-1","0.080-1","0.080-2","0.081-1","0.081-2","0.082-1","0.082.001-1","0.084-1","0.085-1","0.087-1","0.087-2","0.088-1","0.089-1","0.090-1","0.090-1~bpo13+1","0.091-1"]},{"source":"osv","ecosystem":"Debian:13","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.085-1+deb13u1"}]}],"versions":["0.085-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.087-2"}]}],"versions":["0.085-1","0.087-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.055-1","0.056-1","0.056-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.064-1","0.064-1build1","0.066-1","0.067-1","0.067-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.069-1build1","0.073-1","0.074-1","0.075-1","0.076-1","0.076-1build1","0.076-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.078-1","0.080-1","0.080-2","0.080-2build1","0.080-2build2","0.080-2build3","0.080-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.085-1","0.087-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.087-1","0.089-1","0.090-1","0.090-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libcryptx-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.087-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"perl-CryptX","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.89.0-1.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"perl-CryptX","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.89.0-bp160.1.1"}]}],"bundled":2}],"products":[{"vendor":"dcit","product":"cryptx"},{"vendor":"mik","product":"cryptx"}],"references":[{"url":"https://github.com/DCIT/perl-CryptX/security/advisories/GHSA-24c2-gp6c-24c6","tags":["vendor-advisory","exploit","Vendor Advisory","advisory","report"]},{"url":"https://github.com/DCIT/perl-CryptX/commit/9a1dd3e0c27d68e32450be5538b864c2b115ee15.patch","tags":["patch","Patch","fix"]},{"url":"https://metacpan.org/release/MIK/CryptX-0.088","tags":["release-notes","Product","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/04/23/2","tags":["Mailing List","Third Party Advisory","web"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-41564","tags":["advisory"]},{"url":"https://cpan.org/modules","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41564.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41564","tags":["advisory"]},{"url":"https://github.com/DCIT/perl-CryptX","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-41564","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-41564","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-41564","tags":["report"]},{"url":"https://lists.security.metacpan.org/cve-announce/msg/39209500/","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-41564","tags":["web"]},{"url":"https://bugzilla.suse.com/1244472","tags":["report"]},{"url":"https://bugzilla.suse.com/1262697","tags":["report"]},{"url":"https://bugzilla.suse.com/1266804","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-41565","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-41564","title":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking","description":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking.\n\nThe Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery.\n\nThis affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.","status":"published","published":"2026-04-23T07:29:26.34Z","modified":"2026-04-23T13:05:22.853Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-335","CWE-338"],"updated_at":"2026-11-02T13:41:19.694734Z"}],"euvd":[{"id":"EUVD-2026-25201","description":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking.\n\nThe Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery.\n\nThis affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.","status":"published","published":"2026-04-23T07:29:26Z","modified":"2026-04-23T13:05:22Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T19:24:19.171803Z"}],"nvd":[{"id":"CVE-2026-41564","description":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking.\n\nThe Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery.\n\nThis affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.","status":"published","published":"2026-04-23T08:16:01.243Z","modified":"2026-10-26T22:10:00.163Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-335","CWE-338"],"updated_at":"2026-11-02T14:12:15.867234Z"}],"osv":[{"id":"ALPINE-CVE-2026-41564","description":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking.\n\nThe Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery.\n\nThis affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.","status":"published","published":"2026-04-23T08:16:01.243Z","modified":"2026-10-01T02:17:49.285217574Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:27:50.764331Z"},{"id":"CVE-2026-41564","title":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking","description":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking.\n\nThe Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery.\n\nThis affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.","status":"published","published":"2026-04-23T07:29:26.34Z","modified":"2026-10-28T02:31:00.236721027Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-335","CWE-338"],"updated_at":"2026-11-02T15:45:03.764807Z"},{"id":"DEBIAN-CVE-2026-41564","description":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking.  The Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery.  This affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.","status":"published","published":"2026-04-23T08:16:01.243Z","modified":"2026-10-27T09:47:40.766762298Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:54.892385Z"},{"id":"UBUNTU-CVE-2026-41564","description":"CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking. The Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery. This affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.","status":"published","published":"2026-04-23T08:16:00Z","modified":"2026-10-17T12:58:14.783355669Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T16:56:18.393417Z"},{"id":"openSUSE-SU-2026:10773-1","title":"perl-CryptX-0.89.0-1.1 on GA media","description":"These are all security issues fixed in the perl-CryptX-0.89.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-05-13T00:00:00Z","modified":"2026-05-14T08:16:52.621108Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"openSUSE-SU-2026:20936-1","title":"Security update for perl-CryptX","description":"This update for perl-CryptX fixes the following issues:\n\nChanges in perl-CryptX:\n\n- updated to 0.89.0 (0.089)\n   see /usr/share/doc/packages/perl-CryptX/Changes\n\n  0.089   2026-05-10\n          - new: Crypt::ASN1\n          - new: Crypt::AuthEnc::SIV\n          - new: Crypt::AuthEnc::XChaCha20Poly1305\n          - new: Crypt::Cipher::SM4\n          - new: Crypt::Digest::TurboSHAKE\n          - new: Crypt::Digest::KangarooTwelve\n          - new: Crypt::PK::Ed448\n          - new: Crypt::PK::X448\n          - new: Crypt::Stream::XChaCha\n          - new: Crypt::Stream::XSalsa20\n          - Crypt::PK::Ed25519 - new functions: sign_message_ctx, verify_message_ctx, sign_message_ph, verify_message_ph\n          - Crypt::Digest: object digest accessors now finalize the object; use reset() before reuse\n          - Crypt::Mac + Crypt::AuthEnc: finalized-object lifecycle is now enforced consistently\n          - security/hardening fixes across Digest/Mac/AuthEnc/Mode/Stream/PK/PRNG\n          - fixes related to wycheproof test suite\n          - documentation cleanup \u0026 improvements\n          - support for RFC 8702 RSA-PSS-SHAKE128/256 and ECDSA-SHAKE128/256\n          - support for FRP256v1 elliptic-curve\n          - bundled libtomcrypt update branch:develop (commit: 8b5af49b 2026-05-06)\n          - CVE-2026-41565 bsc#1266804\n\n  0.088   2026-04-23\n          - Crypt::KeyDerivation - new functions: pbkdf1_openssl, bcrypt_pbkdf, scrypt_pbkdf, argon2_pbkdf\n          - Crypt::Misc - new functions: random_v7uuid, is_uuid\n          - bundled libtomcrypt update branch:develop (commit: 2e441a17 2026-04-15)\n          - bundled libtommath update branch:develop (commit: ae40a87 2026-04-20)\n          - security fix CVE-2026-41564 https://github.com/DCIT/perl-CryptX/security/advisories/GHSA-24c2-gp6c-24c6\n            bsc#1262697\n          - CVE-2026-41565 bsc#1266804\n","status":"published","published":"2026-06-10T11:48:58Z","modified":"2026-06-13T18:24:19.185662671Z","updated_at":"2026-11-02T16:58:41.885092Z"}]}}