---
id: CVE-2026-73179
title: >-
  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
  concurr…
summary: >-
  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
  concurr…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-367
vendor: Apache Software Foundation
product: 'org.apache.cxf:cxf-rt-rs-security-oauth2'
affected:
  - 'org.apache.cxf:cxf-rt-rs-security-oauth2 >= 4.2.0 < 4.2.4'
  - 'org.apache.cxf:cxf-rt-rs-security-oauth2 >= 4.0.0 < 4.1.9'
  - 'org.apache.cxf:cxf-rt-rs-security-oauth2 < 3.6.13'
published: '2026-10-09'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T17:17:27.263'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73179'
references:
  - url: 'https://lists.apache.org/thread.html/6msbm601o6ogfgdzdbtbrmgspmz50nxk'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/10/09/5'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T16:10:17.785126Z'
epss: 0.00402
epssPercentile: 0.34255
ingestedAt: '2026-10-09T12:53:29.300Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.