CVE-2026-49871: CWE-352 Cross-Site Request Forgery (CSRF) in Apache Software Foundation Apache APISIX
Cross-Site Request Forgery (CSRF) vulnerability in the cas-auth plugin under default configurations. This defect allows a remote attacker that manages to send a victim to a webpage controlled by them can cause the victim's browser to become authenticated as a different identity. Actions the victim takes upstream are then attributed to attackers identity. This issue affects Apache APISIX: from 3.0.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.
AI Analysis
Technical Summary
CVE-2026-49871 is a CSRF vulnerability (CWE-352) in the cas-auth plugin of Apache APISIX. Under default configurations, an attacker can induce a victim's browser to authenticate as an attacker-controlled identity by sending the victim to a malicious webpage. Consequently, any actions the victim performs upstream are attributed to the attacker's identity. This affects Apache APISIX versions 3.0.0 through 3.16.0. The vulnerability has a low CVSS 4.0 score of 2.1. The issue is fixed in Apache APISIX version 3.17.0.
Potential Impact
An attacker can cause a victim's browser to authenticate as the attacker's identity, leading to actions performed by the victim being attributed to the attacker. This can result in unauthorized actions being taken with the attacker's privileges. The impact is limited by the low CVSS score and the requirement for user interaction.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.17.0 or later, where this CSRF vulnerability in the cas-auth plugin is fixed. No other mitigation or temporary workaround is indicated.
CVE-2026-49871: CWE-352 Cross-Site Request Forgery (CSRF) in Apache Software Foundation Apache APISIX
Description
Cross-Site Request Forgery (CSRF) vulnerability in the cas-auth plugin under default configurations. This defect allows a remote attacker that manages to send a victim to a webpage controlled by them can cause the victim's browser to become authenticated as a different identity. Actions the victim takes upstream are then attributed to attackers identity. This issue affects Apache APISIX: from 3.0.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.
CVSS v4.0
Score 2.1low
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49871 is a CSRF vulnerability (CWE-352) in the cas-auth plugin of Apache APISIX. Under default configurations, an attacker can induce a victim's browser to authenticate as an attacker-controlled identity by sending the victim to a malicious webpage. Consequently, any actions the victim performs upstream are attributed to the attacker's identity. This affects Apache APISIX versions 3.0.0 through 3.16.0. The vulnerability has a low CVSS 4.0 score of 2.1. The issue is fixed in Apache APISIX version 3.17.0.
Potential Impact
An attacker can cause a victim's browser to authenticate as the attacker's identity, leading to actions performed by the victim being attributed to the attacker. This can result in unauthorized actions being taken with the attacker's privileges. The impact is limited by the low CVSS score and the requirement for user interaction.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.17.0 or later, where this CSRF vulnerability in the cas-auth plugin is fixed. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-06-02T02:37:57.807Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a354cc5f198dc38c1587783
Added to database: 06/19/2026, 14:05:57 UTC
Last enriched: 06/26/2026, 15:16:53 UTC
Last updated: 08/03/2026, 19:18:00 UTC
Views: 82
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