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CVE-2026-116585 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/go-jose/go-jose/commit/35883f7999e87cbd1b1f4cda07fdad8cd71c3dd6	[email protected]
https://github.com/go-jose/go-jose/commit/74114c2fa22669a2b2a296746eaa82e15566fd54	[email protected]
https://github.com/go-jose/go-jose/pull/292	[email protected]
https://github.com/go-jose/go-jose/releases/tag/v4.1.5	[email protected]
https://github.com/go-jose/go-jose/security/advisories/GHSA-4w3g-jfj2-cw2q	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-129	Improper Validation of Array Index	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 31, 2026	CVE Modified	CISA-ADP
Oct 26, 2026	New CVE Received	[email protected]