{"id":"CVE-2021-29443","details":"jose is an npm library providing a number of cryptographic operations. In vulnerable versions AES_CBC_HMAC_SHA2 Algorithm (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512) decryption would always execute both HMAC tag verification and CBC decryption, if either failed `JWEDecryptionFailed` would be thrown. A possibly observable difference in timing when padding error would occur while decrypting the ciphertext makes a padding oracle and an adversary might be able to make use of that oracle to decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). All major release versions have had a patch released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are `^1.28.1 || ^2.0.5 || \u003e=3.11.4`. Users should upgrade their v1.x dependency to ^1.28.1, their v2.x dependency to ^2.0.5, and their v3.x dependency to ^3.11.4. Thanks to Jason from Microsoft Vulnerability Research (MSVR) for bringing this up and Eva Sarafianou (@esarafianou) for helping to score this advisory.","aliases":["GHSA-58f5-hfqc-jgch"],"modified":"2026-07-09T14:06:14.174616Z","published":"2021-04-16T18:15:13.590Z","references":[{"type":"ADVISORY","url":"https://www.npmjs.com/package/jose"},{"type":"FIX","url":"https://github.com/panva/jose/security/advisories/GHSA-58f5-hfqc-jgch"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/panva/jose","events":[{"introduced":"6a32da6937c602f88fc2c527651a66d8574e6612"},{"fixed":"51e0d8b3fbc1faebf67f6dbaced1095534d7017f"},{"introduced":"1876669a192e0c5d6b8c29a7408a8a8128d0b8b1"},{"fixed":"2269f4b2c56828a0972865f42bf3901cc970cd16"},{"introduced":"076eea11bb6e3f9e284663e53923747a2a6f6c3e"},{"fixed":"5a7078a4a2e0b0d069c48db94ccb4714033316f0"}],"database_specific":{"cpe":"cpe:2.3:a:panva:jose:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"1.0.0"},{"fixed":"1.28.1"},{"introduced":"2.0.0"},{"fixed":"2.0.5"},{"introduced":"3.0.0"},{"fixed":"3.11.4"}],"source":"CPE_RANGE"}}],"versions":["v1.28.0","v3.11.3","v3.11.2","v3.11.1","v3.11.0","v3.10.0","v3.9.0","v3.8.0","v3.7.1","v3.7.0","v3.6.2","v3.6.1","v3.6.0","v3.5.4","v3.5.3","v3.5.2","v2.0.4","v3.5.1","v3.5.0","v3.4.0","v3.3.2","v3.3.1","v3.3.0","v3.2.0","v3.1.3","v3.1.2","v3.1.1","v3.1.0","v3.0.2","v3.0.1","v3.0.0","v2.0.3","v2.0.2","v2.0.1","v2.0.0","v1.27.3","v1.27.2","v1.27.1","v1.27.0","v1.26.1","v1.26.0","v1.25.2","v1.25.1","v1.25.0","v1.24.1","v1.24.0","v1.23.0","v1.22.2","v1.22.1","v1.22.0","v1.21.1","v1.21.0","v1.20.0","v1.19.0","v1.18.2","v1.18.1","v1.18.0","v1.17.2","v1.17.1","v1.17.0","v1.16.2","v1.16.1","v1.16.0","v1.15.1","v1.15.0","v1.14.0","v1.13.0","v1.12.1","v1.12.0","v1.11.0","v1.10.2","v1.10.1","v1.10.0","v1.9.2","v1.9.1","v1.9.0","v1.8.0","v1.7.0","v1.6.1","v1.6.0","v1.5.2","v1.5.1","v1.5.0","v1.4.1","v1.4.0","v1.3.0","v1.0.2","v1.0.1","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29443.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}