Eclipse MicroProfile JWT: JWK key_ops Duplicate Check OOM via Quadratic
CVE-2026-89314 Published on October 23, 2026
Quadratic-time key_ops duplicate check lets a sub-1 MB JWKS body pin a CPU core for ~15 s
`jwkFields.CheckConsistency` detected duplicate `key_ops` entries with a pairwise nested loop, making validation cost grow with the **square** of the entry count. Because the check runs on every JWK and JWKS unmarshal, a modestly sized but hostile JWKS document could occupy a CPU core for many seconds.
Vulnerability Analysis
CVE-2026-89314 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Inefficient Algorithmic Complexity
An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
Affected Versions
Eclipse Foundation Eclipse KeyPont - GOSE:- Version 0.7.3, <= 0.13.0-rc1 is affected.
- Before 1.0.0-rc4 is affected.