Eclipse JWE LoadPublicKey panics on nonEC alg with EC JWK
CVE-2026-89316 Published on October 23, 2026
LoadPublicKey panics on kty/alg mismatch (kty=EC with a non-EC alg) via unchecked *ECDSAOptions type assertion
`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 ยง4.4 permits reaches that assertion and **panics**.
Vulnerability Analysis
CVE-2026-89316 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-89316. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Uncaught Exception
An exception is thrown from a function, but it is not caught. When an exception is not caught, it may cause the program to crash or expose sensitive information.
Affected Versions
Eclipse Foundation Eclipse KeyPont - GOSE:- Version 0.7.3, <= 0.13.0-rc1 is affected.
- Before 1.0.0-rc4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.