CVE-2026-49872: CWE-287 Improper Authentication in Apache Software Foundation Apache APISIX
Apache APISIX versions 3.0.0 through 3.16.0 contain an improper authentication vulnerability in the cas-auth plugin. This flaw allows an attacker to potentially authenticate using credentials from a different source than intended. The issue is resolved in version 3.17.0, which users are advised to upgrade to.
AI Analysis
Technical Summary
CVE-2026-49872 describes an improper authentication vulnerability (CWE-287) in Apache APISIX when the cas-auth plugin is used in a route. The vulnerability allows an attacker to authenticate with credentials originating from a different source, bypassing intended authentication controls. This affects Apache APISIX versions from 3.0.0 up to and including 3.16.0. The vendor has fixed this issue in version 3.17.0.
Potential Impact
An attacker with some level of privileges (low privileges required) can exploit this vulnerability to authenticate improperly, potentially gaining unauthorized access to services protected by the cas-auth plugin. The CVSS 4.0 base score is 5.3 (medium severity), indicating a moderate impact on confidentiality, integrity, or availability.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.17.0 or later, where this vulnerability is fixed. No other official remediation or temporary workaround is indicated. Patch status is confirmed by the vendor's versioning recommendation.
CVE-2026-49872: CWE-287 Improper Authentication in Apache Software Foundation Apache APISIX
Description
Apache APISIX versions 3.0.0 through 3.16.0 contain an improper authentication vulnerability in the cas-auth plugin. This flaw allows an attacker to potentially authenticate using credentials from a different source than intended. The issue is resolved in version 3.17.0, which users are advised to upgrade to.
CVSS v4.0
Score 5.3medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49872 describes an improper authentication vulnerability (CWE-287) in Apache APISIX when the cas-auth plugin is used in a route. The vulnerability allows an attacker to authenticate with credentials originating from a different source, bypassing intended authentication controls. This affects Apache APISIX versions from 3.0.0 up to and including 3.16.0. The vendor has fixed this issue in version 3.17.0.
Potential Impact
An attacker with some level of privileges (low privileges required) can exploit this vulnerability to authenticate improperly, potentially gaining unauthorized access to services protected by the cas-auth plugin. The CVSS 4.0 base score is 5.3 (medium severity), indicating a moderate impact on confidentiality, integrity, or availability.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.17.0 or later, where this vulnerability is fixed. No other official remediation or temporary workaround is indicated. Patch status is confirmed by the vendor's versioning recommendation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-06-02T03:54:04.009Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a354cc5f198dc38c1587787
Added to database: 6/19/2026, 2:05:57 PM
Last enriched: 6/19/2026, 2:20:41 PM
Last updated: 6/19/2026, 4:12:57 PM
Views: 13
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