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CVE-2026-89318

JweRsaKeyEncryptionDecryptorImpl.Decrypt panics on attacker-chosen IV length (stdlib GCM.Open reached without nonce-size check)

MEDIUM
6.9
CVSS Score
Published: October 23, 2026 at 08:51 AM UTC
Updated: October 23, 2026 at 07:30 PM UTC
1 product affected across 1 vendorEclipse KeyPont - GOSE

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Severity
MEDIUM6.9
Exploit prediction
EPSS 0.2%

Description

`JweRsaKeyEncryptionDecryptorImpl.Decrypt` passed the JWE's initialization vector to `cipher.AEAD.Open` without checking its length. The Go standard library **panics** rather than returning an error when a GCM nonce is not exactly `NonceSize()` bytes, so a JWE carrying a wrong-sized IV crashes the decrypting goroutine.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://github.com/eclipse-keypont/gose/security/advisories/GHSA-265w-83cm-777q

CVSS

6.9MEDIUMeclipse
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-248

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