CVE-2026-73179

High

Description

Improper enforcement of single-use authorization code semantics in the JPA OAuth2 authorization code grant provider in Apache CXFallows a remote attacker to obtain multiple valid access tokens from a single authorization code via concurrent token exchange requests that race the non-atomic find-then-delete operation against a shared relational database under READ_COMMITTED isolation. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fixes this issue.

SeverityHigh

CVSS8.1

Exploit probability—

Product

Apache Cxf

PublishedOct 9, 2026

First seenOct 9, 2026

Weakness typeCWE-367CWE-367

How to fix

Update

apache cxf3.6.13, 4.1.9, 4.2.4 or later

Vendor advisories

lists.apache.org/thread.html/6msbm601o6ogfgdzdbtbrmgspmz50nxk

Affected products

Product	Affected versions	Fixed in
apache cxf	v < 3.6.13, 4.0.0 ≤ v < 4.1.9, 4.2.0 ≤ v < 4.2.4	3.6.13, 4.1.9, 4.2.4

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