CVE-2026-73179

EUVD-2026-95695

09.10.2026, 11:17

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.

TOCTOU

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
apache	CNA	UNKNOWN				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 11.16%

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
apache	cxf	4.2.0 ≤ 𝑥 < 4.2.4	CNA
apache	cxf	4.0.0 ≤ 𝑥 < 4.1.9	CNA
apache	cxf	𝑥 < 3.6.13	CNA

Common Weakness Enumeration

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
The software checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the software to perform invalid actions when the resource is in an unexpected state.

Vulnerability Media Exposure

[GERMAN] Apache CXF: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Apache CXF ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren und offenzulegen, Benutzer auf vom Angreifer kontrollierte Websites umzuleiten oder Denial-of-Service-Zustände auszulösen.
Published: 2026-10-08T22:00:00+00:00

References

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

http://www.openwall.com/lists/oss-security/2026/10/09/5