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CVE-2026-89316

LoadPublicKey panics on kty/alg mismatch (kty=EC with a non-EC alg) via unchecked *ECDSAOptions type assertion

MEDIUM
6.3
CVSS Score
Published: October 23, 2026 at 08:48 AM UTC
Updated: October 23, 2026 at 07:30 PM UTC
1 product affected across 1 vendorEclipse KeyPont - GOSE

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.2%

Description

`LoadPublicKey` resolved an EC key's curve with an unchecked type assertion, `algToOptsMap[alg].(*ECDSAOptions)`. A JWK declaring `"kty":"EC"` together with a non-EC `"alg"` — which RFC 7517 §4.4 permits — reaches that assertion and **panics**.

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-fv39-8484-f4wr

CVSS

6.3MEDIUMeclipse
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-248

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