CVE-2026-116585
Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards…
- Risk score
- 41/100
- CVSS
- 6.9 v4.0
- Published
- 26 Oct 2026
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What to know
- What it is
- 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-HS5…
- Affected
- See advisory
- Fix
- Upgrade the product to 4.1.5 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.9 medium
References
- https://github.com/go-jose/go-jose/commit/35883f7999e87cbd1b1f4cda07fdad8cd71c3dd6
- https://github.com/go-jose/go-jose/commit/74114c2fa22669a2b2a296746eaa82e15566fd54
- https://github.com/go-jose/go-jose/pull/292
- https://github.com/go-jose/go-jose/releases/tag/v4.1.5
- https://github.com/go-jose/go-jose/security/advisories/GHSA-4w3g-jfj2-cw2q
Original 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.
Last activity 26 Oct 2026. Patch Forecast updates every hour.