CVE-2026-68079: CWE-294 Authentication Bypass by Capture-replay in Apache Software Foundation Apache CXF
CVE-2026-68079 is a critical authentication bypass vulnerability in Apache CXF's DefaultEncryptingCodeDataProvider. The flaw allows a captured authorization code to be redeemed multiple times, violating the RFC requirement that authorization codes must only be used once. This issue affects multiple versions of Apache CXF prior to 4.2.3, 4.1.8, and 3.6.12, which contain the fixes.
AI Analysis
Technical Summary
The vulnerability in Apache CXF's DefaultEncryptingCodeDataProvider arises from improper implementation of the removeCodeGrant functionality. This flaw enables an attacker who captures an authorization code to reuse it indefinitely, bypassing authentication controls. The repeated use of the same authorization code violates the OAuth 2.0 RFC specification that mandates single use of authorization codes. The vulnerability has a CVSS 3.1 base score of 9.8, indicating critical severity with network attack vector, low complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. Fixed versions are 4.2.3, 4.1.8, and 3.6.12.
Potential Impact
An attacker who captures an authorization code can redeem it unlimited times, potentially gaining unauthorized access to protected resources. This compromises confidentiality, integrity, and availability of the affected system. The vulnerability can be exploited remotely without authentication or user interaction.
Mitigation Recommendations
Users are strongly advised to upgrade Apache CXF to versions 4.2.3, 4.1.8, or 3.6.12 where this issue is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor's recommended upgrade versions.
CVE-2026-68079: CWE-294 Authentication Bypass by Capture-replay in Apache Software Foundation Apache CXF
Description
CVE-2026-68079 is a critical authentication bypass vulnerability in Apache CXF's DefaultEncryptingCodeDataProvider. The flaw allows a captured authorization code to be redeemed multiple times, violating the RFC requirement that authorization codes must only be used once. This issue affects multiple versions of Apache CXF prior to 4.2.3, 4.1.8, and 3.6.12, which contain the fixes.
CVSS v3.1
Score 9.8critical
Affected software
Apache Software Foundation
Apache CXF
pkg:maven/Apache Software Foundation/org.apache.cxf:cxf-rt-rs-security-oauth2Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Apache CXF's DefaultEncryptingCodeDataProvider arises from improper implementation of the removeCodeGrant functionality. This flaw enables an attacker who captures an authorization code to reuse it indefinitely, bypassing authentication controls. The repeated use of the same authorization code violates the OAuth 2.0 RFC specification that mandates single use of authorization codes. The vulnerability has a CVSS 3.1 base score of 9.8, indicating critical severity with network attack vector, low complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. Fixed versions are 4.2.3, 4.1.8, and 3.6.12.
Potential Impact
An attacker who captures an authorization code can redeem it unlimited times, potentially gaining unauthorized access to protected resources. This compromises confidentiality, integrity, and availability of the affected system. The vulnerability can be exploited remotely without authentication or user interaction.
Mitigation Recommendations
Users are strongly advised to upgrade Apache CXF to versions 4.2.3, 4.1.8, or 3.6.12 where this issue is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed by the vendor's recommended upgrade versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-07-30T09:22:10.738Z
- State
- PUBLISHED
Threat ID: 6a74768bbf8831d539a9b745
Added to database: 08/06/2026, 11:56:59 UTC
Last enriched: 08/13/2026, 16:59:17 UTC
Last updated: 09/18/2026, 10:01:33 UTC
Views: 70
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