CVE-2026-65583

Critical

Description

Apache CXF’s OIDC relying-party token validation could accept self-issued ID tokens without enforcing required claim checks (issuer/subject/audience/time and sub_jwk binding), enabling authentication bypass with crafted tokens. However, note that self-issued ID tokens are not accepted by default in the validator. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fixes this issue.

SeverityCritical

CVSS9.1

Exploit probability—

Product

Apache Cxf

PublishedAug 6, 2026

First seenAug 6, 2026

Weakness typeCWE-345CWE-345

How to fix

Update

apache cxf3.6.12, 4.1.8, 4.2.3 or later

Vendor advisories

lists.apache.org/thread/fzj8yzgfl53gclxrcdrnrx3grcpkq51j

Affected products

Product	Affected versions	Fixed in
apache cxf	v < 3.6.12, 4.0.0 ≤ v < 4.1.8, 4.2.0 ≤ v < 4.2.3	3.6.12, 4.1.8, 4.2.3

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