CVE-2026-50627

VendorapacheProductcxfDiscoveredJun 12, 2026UpdatedOct 26, 2026

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.

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CVSS v3.1

9.1 CRITICAL

EPSS

4.52%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Oct 26, 2026

▲ 4.08pp

0.45% → 4.52% over 3 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

ScopeCHANGED

ConfidentialityHIGH

IntegrityHIGH

AvailabilityHIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Connections

3 relationships

Timeline

disclosure → media coverage

Jun 12, 2026

Disclosure — published as a CVE record. · last revised by NVD Oct 26, 2026