{"schema":"threatline.record/2","record":{"id":"CVE-2026-65629","aliases":["GHSA-h4gx-8jq2-mfhc"],"summary":"Weak PBKDF2 parameters for password-encrypted private-key export in jose","details":"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.","categories":["Unclassified"],"product":"jose","vendor":"potatosalad","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-65629","source_modified_at":"2026-10-26T19:53:35.646Z","fetched_at":"2026-10-26T23:45:56.352924Z","product":"jose","vendor":"potatosalad","versions":[{"lessThan":"1.11.13","status":"affected","version":"1.10.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-65629","source_modified_at":"2026-10-26T19:53:35.646Z","fetched_at":"2026-10-26T23:45:56.352924Z","product":"jose","vendor":"potatosalad","versions":[{"lessThan":"461b261902531ca016190e780bb70862d561a7e0","status":"affected","version":"85fddd89ee56b6f9c19eff7d9cfffeef62c330b9","versionType":"git"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-65629","source_modified_at":"2026-10-26T19:53:35.646Z","fetched_at":"2026-10-26T23:45:56.352924Z","package":{"name":"jose","ecosystem":null},"version":"1.11.13","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-65629","source_modified_at":"2026-10-26T19:53:35.646Z","fetched_at":"2026-10-26T23:45:56.352924Z","package":{"name":"jose","ecosystem":null},"version":"461b261902531ca016190e780bb70862d561a7e0","basis":"first unaffected version stated in the CVE record"}],"cvss":7.4,"severity":"High","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-26T19:53:35.646Z","modified_at":"2026-10-26T19:53:35.646Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-65629","fetched_at":"2026-10-26T23:45:56.352924Z","source_modified_at":"2026-10-26T19:53:35.646Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://github.com/potatosalad/erlang-jose/security/advisories/GHSA-h4gx-8jq2-mfhc","tags":["vendor-advisory","related"]},{"source":"CVE List","url":"https://cna.erlef.org/cves/CVE-2026-65629.html","tags":["related"]},{"source":"CVE List","url":"https://osv.dev/vulnerability/EEF-CVE-2026-65629","tags":["related"]},{"source":"CVE List","url":"https://github.com/potatosalad/erlang-jose/commit/85fddd89ee56b6f9c19eff7d9cfffeef62c330b9","tags":["related"]},{"source":"CVE List","url":"https://github.com/potatosalad/erlang-jose/commit/461b261902531ca016190e780bb70862d561a7e0","tags":["patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-26T19:53:35.646Z","content_hash":"78c1623cfe64eb3c9571fcec7a5b234b104bbb41e51fa2583880814aa9d1cef2"}}