Vulnerability · Published Oct 23, 2026 · Assigned by eclipse
CVE-2026-89316LoadPublicKey panics on kty/alg mismatch (kty=EC with a non-EC alg) via unchecked *ECDSAOptions type assertion
Medium 6.3
In plain English
A medium-severity security flaw in Eclipse KeyPont - GOSE from Eclipse Foundation. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Severity (CVSS 4.0)6.3Medium
Exploit odds (30 days)0.2%top 89.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Eclipse Foundation | Eclipse KeyPont - GOSE | 0.7.3 – through 0.13.0-rc1 |
| Eclipse Foundation | Eclipse KeyPont - GOSE | 0 – before 1.0.0-rc4 |
Weakness: CWE-248 · Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N