CVE-2026-116585

Description

Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.5, decrypting untrusted JWE ciphertext with A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 can pass an empty ciphertext buffer to CBC-HMAC unpadding. Insufficient validation allows the empty buffer to be indexed, causing a panic and denial of service. Applications that decrypt attacker-controlled ciphertext with one of these content-encryption algorithms are affected. This issue is fixed in version 4.1.5.

References

https://github.com/go-jose/go-jose/security/advisories/GHSA-4w3g-jfj2-cw2q

https://github.com/go-jose/go-jose/releases/tag/v4.1.5

https://github.com/go-jose/go-jose/pull/292

https://github.com/go-jose/go-jose/commit/74114c2fa22669a2b2a296746eaa82e15566fd54

https://github.com/go-jose/go-jose/commit/35883f7999e87cbd1b1f4cda07fdad8cd71c3dd6

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-110465

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS