CVE-2026-89314

Quadratic-time key_ops duplicate check lets a sub-1 MB JWKS body pin a CPU core for ~15 s

State: Published
Severity: 6.9 Medium
Published: Oct 23, 2026
Updated: Oct 23, 2026
Reserved: Sep 11, 2026

Description

`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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N	eclipse

Weaknesses

CWE-407 Inefficient Algorithmic Complexity

Affected Products

Product	Versions
Eclipse KeyPont - GOSEEclipse Foundation	0.7.3 through 0.13.0-rc1Affected
Eclipse KeyPont - GOSEEclipse Foundation	before 1.0.0-rc4Affected

References

https://github.com/eclipse-keypont/gose/security/advisories/GHSA-r56w-f43c-828p

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