What’s Vulnerable › Vulnerabilities
CVE-2026-89316: LoadPublicKey panics on kty/alg mismatch (kty=EC with a non-EC alg) via unchecked *ECDSAOptions type assertion
- Severity: medium (CVSS 6.3 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-23 · updated 2026-10-23
- Weakness: CWE-248
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 products
- Eclipse Foundation Eclipse KeyPont - GOSE: from 0.7.3 through 0.13.0-rc1; before 1.0.0-rc4 — fixed in 1.0.0-rc4
How to fix
Upgrade to a fixed version: Eclipse Foundation Eclipse KeyPont - GOSE 1.0.0-rc4. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-89316 or the next vulnerability affects your stack