{"id":"CVE-2026-65629","revision":"6b0d0d311af2418185396a9e6e26833b","records":[{"revision":"6b0d0d311af2418185396a9e6e26833b","observedAt":"2026-10-26T20:35:31.018+00:00","statement":{"source":"cve-program","id":"CVE-2026-65629","aliases":[],"title":"Weak PBKDF2 parameters for password-encrypted private-key export in jose","description":"Use of Password Hash With Insufficient Computational Effort in the jose library allows an attacker who obtains a password-encrypted private-key export to recover the private key through an offline password-cracking attack.\n\nWhen jose exports a password-encrypted private key with jose_jwk:to_der/2 (JOSE.JWK.to_der/2), the jose_jwk_der:to_binary/3 function in src/jwk/jose_jwk_der.erl serializes the key as a PKCS#8 EncryptedPrivateKeyInfo using the PBES2 scheme with hardcoded key-derivation parameters: PBKDF2-HMAC-SHA256 with an iteration count of 2048 and an 8-byte (64-bit) random salt. Neither value can be overridden by the caller.\n\nBoth values are far below current guidance (OWASP recommends on the order of 600,000 iterations for PBKDF2-HMAC-SHA256, and NIST recommends salts of at least 128 bits), so the key-stretching work factor is roughly 300 times lower than intended and the short salt reduces the cost of precomputation across keys. The symmetric encryption (AES-256-CBC with a 16-byte random IV) is not affected; the weakness is entirely in the derivation strength. An attacker who obtains one of these exported blobs (for example from a backup, configuration repository, object storage, or logs) can mount a cheap offline dictionary or brute-force attack against the export password, and success yields the full private key.\n\nThis issue affects jose: from 1.10.0 before 1.11.13.","state":0,"publishedAt":"2026-10-26T19:53:35.646+00:00","modifiedAt":"2026-10-26T19:53:35.646+00:00","affected":[{"ecosystem":"https://repo.hex.pm","name":"jose","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"collectionURL\": \"https://repo.hex.pm\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:potatosalad:jose:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"modules\": [\n                        \"jose_jwk_der\",\n                        \"jose_jwk\",\n                        \"'Elixir.JOSE.JWK'\"\n                    ],\n                    \"packageName\": \"jose\",\n                    \"packageURL\": \"pkg:hex/jose\",\n                    \"product\": \"jose\",\n                    \"programFiles\": [\n                        \"src/jwk/jose_jwk_der.erl\",\n                        \"src/jwk/jose_jwk.erl\",\n                        \"lib/jose/jwk.ex\"\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"jose_jwk_der:to_binary/3\"\n                        },\n                        {\n                            \"name\": \"jose_jwk:to_der/2\"\n                        },\n                        {\n                            \"name\": \"'Elixir.JOSE.JWK':to_der/2\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/potatosalad/erlang-jose\",\n                    \"vendor\": \"potatosalad\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"1.11.13\",\n                            \"status\": \"affected\",\n                            \"version\": \"1.10.0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"https://github.com","name":"potatosalad/erlang-jose","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"collectionURL\": \"https://github.com\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:potatosalad:jose:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"modules\": [\n                        \"jose_jwk_der\",\n                        \"jose_jwk\",\n                        \"'Elixir.JOSE.JWK'\"\n                    ],\n                    \"packageName\": \"potatosalad/erlang-jose\",\n                    \"packageURL\": \"pkg:github/potatosalad/erlang-jose\",\n                    \"product\": \"jose\",\n                    \"programFiles\": [\n                        \"src/jwk/jose_jwk_der.erl\",\n                        \"src/jwk/jose_jwk.erl\",\n                        \"lib/jose/jwk.ex\"\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"jose_jwk_der:to_binary/3\"\n                        },\n                        {\n                            \"name\": \"jose_jwk:to_der/2\"\n                        },\n                        {\n                            \"name\": \"'Elixir.JOSE.JWK':to_der/2\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/potatosalad/erlang-jose\",\n                    \"vendor\": \"potatosalad\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"461b261902531ca016190e780bb70862d561a7e0\",\n                            \"status\": \"affected\",\n                            \"version\": \"85fddd89ee56b6f9c19eff7d9cfffeef62c330b9\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.4,"severity":"HIGH"}],"references":["https://github.com/potatosalad/erlang-jose/security/advisories/GHSA-h4gx-8jq2-mfhc","https://cna.erlef.org/cves/CVE-2026-65629.html","https://osv.dev/vulnerability/EEF-CVE-2026-65629","https://github.com/potatosalad/erlang-jose/commit/85fddd89ee56b6f9c19eff7d9cfffeef62c330b9","https://github.com/potatosalad/erlang-jose/commit/461b261902531ca016190e780bb70862d561a7e0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-65629","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-65629","identifiers":["CVE-2026-65629"]},"retained":false,"historicalAffected":[]}],"coverage":[]}