RHLW-2026-2D8697B26CCD16C3 Lightwell Security Advisory: cxf-rt-rs-security-oauth2 4.2.2.rhlw-00006

Red Hat Lightwell has released org.apache.cxf:cxf-rt-rs-security-oauth2 4.2.2.rhlw-00006 with backported fixes for CVE-2026-57818, CVE-2026-63687, CVE-2026-68079, and CVE-2026-68481. CVE-2026-57818: Apache CXF: OAuth2 Authorization Code Replay via TOCTOU in JCacheCodeDataProvider CVE-2026-63687:...

org.apache.cxf/cxf: Apache CXF: Authorization Code Replay via Race Condition

A flaw was found in Apache CXF. A race condition in the JCacheCodeDataProvider allows a remote attacker to redeem a single authorization code multiple times through concurrent requests. This can result in the issuance of multiple distinct, valid access tokens, potentially leading to unauthorized...

Time-of-Check Time-of-Use (TOCTOU)

Apache CXF is vulnerable to Time-of-Check Time-of-Use TOCTOU. The vulnerability is due to a race condition in JCacheCodeDataProvider that allows the same authorization code to be redeemed concurrently, which allows an attacker to obtain multiple distinct and valid access tokens from a single...

CVE-2026-57818

A flaw was found in Apache CXF. A race condition in the JCacheCodeDataProvider allows a remote attacker to redeem a single authorization code multiple times through concurrent requests. This can result in the issuance of multiple distinct, valid access tokens, potentially leading to unauthorized...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview org.apache.cxf:cxf-rt-rs-security-oauth2 is a services framework. Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition due to a race condition in the JCacheCodeDataProvider process. An attacker can obtain multiple valid access tokens by...

CVE-2026-57818

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...

CVE-2026-57818

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...

EUVD-2026-53862

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...

CVE-2026-57818 Apache CXF: OAuth2 Authorization Code Replay via TOCTOU in JCacheCodeDataProvider

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...

CVE-2026-57818

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...

PT-2026-68472

Name of the Vulnerable Software and Affected Versions versions prior to 4.2.3 versions prior to 4.1.8 versions prior to 3.6.12 Description A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times by sending concurrent requests. This leads ...

CVE-2026-57818: Time-of-check Time-of-use (TOCTOU) Race Condition

A race condition in JCacheCodeDataProvider allows an attacker to redeem a single authorization code multiple times via concurrent requests, resulting in the issuance of multiple distinct, valid access tokens. Users are recommended to upgrade to versions 4.2.3, 4.1.8 or 3.6.12, which fix this issu...