{"id":"GHSA-2c7c-3mj9-8fqh","aliases":["GO-2023-2334"],"title":"Decryption of malicious PBES2 JWE objects can consume unbounded system resources","summary":"Decryption of malicious PBES2 JWE objects can consume unbounded system resources","severity":"medium","vendor":"go-jose","product":"github.com/go-jose/go-jose/v3","ecosystem":"go","affected":["github.com/go-jose/go-jose/v3 < 3.0.1","github.com/square/go-jose < 2.6.2"],"patched":["github.com/go-jose/go-jose/v3 3.0.1","github.com/square/go-jose 2.6.2"],"published":"2023-11-21","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:49:58.719941857Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-2c7c-3mj9-8fqh","references":[{"url":"https://github.com/go-jose/go-jose/issues/64"},{"url":"https://github.com/go-jose/go-jose/commit/65351c27657d58960c2e6c9fbb2b00f818e50568"},{"url":"https://github.com/go-jose/go-jose/commit/a3d307244c3bc50b25a71aa0688764c32ec419c7"},{"url":"https://github.com/go-jose/go-jose"}],"tags":["osv","go"],"ingestedAt":"2026-09-12T03:13:01.745Z","slug":"GHSA-2c7c-3mj9-8fqh","body":"## Overview\n\nThe go-jose package is subject to a \"billion hashes attack\" causing denial-of-service when decrypting JWE inputs. This occurs when an attacker can provide a PBES2 encrypted JWE blob with a very large p2c value that, when decrypted, produces a denial-of-service.\n\n## Affected packages\n\n- `github.com/go-jose/go-jose/v3 < 3.0.1`\n- `github.com/square/go-jose < 2.6.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/go-jose/go-jose/v3 3.0.1`\n- `github.com/square/go-jose 2.6.2`","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}