CVE-2026-506279.1CriticalCWE-289

CVE-2026-50627: Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator

Apache Software Foundation · Apache CXF

Vendor fix available · Affected: Apache Software Foundation Apache CXF · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

4.1%probability of exploitation in the next 30 days

90th percentile

050100

Higher than 90% of scored CVEs

9.1CriticalCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading to Token Confusion/Routing attacks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Apache Software Foundation · Apache CXFfrom 4.2.0 before 4.2.2; from 4.0.0 before 4.1.7; before 3.6.12

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Authentication Bypass by Alternate Name · Authentication
Vendor: Apache Software Foundation
Published: June 2026
Band: Possible (1 to 10%), June 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-50627 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.