CVE-2026-49871: CWE-352 Cross-Site Request Forgery (CSRF) in Apache Software Foundation Apache APISIX
A Cross-Site Request Forgery (CSRF) vulnerability exists in the cas-auth plugin of Apache APISIX under default configurations. This flaw allows a remote attacker to cause a victim's browser to authenticate as a different identity by sending the victim to a malicious webpage. Consequently, actions performed by the victim upstream are attributed to the attacker's identity. The vulnerability affects Apache APISIX versions from 3.0.0 through 3.16.0. Upgrading to version 3.17.0 addresses this issue.
AI Analysis
Technical Summary
CVE-2026-49871 is a CSRF vulnerability in the cas-auth plugin of Apache APISIX. Under default settings, an attacker can trick a victim into authenticating as the attacker by directing the victim's browser to a crafted webpage. This results in the victim's upstream actions being attributed to the attacker's identity. The issue affects Apache APISIX versions 3.0.0 through 3.16.0. The vendor recommends upgrading to version 3.17.0 to fix the vulnerability.
Potential Impact
An attacker who successfully exploits this vulnerability can cause a victim's browser to authenticate as the attacker, leading to misattribution of the victim's upstream actions to the attacker's identity. This could potentially allow unauthorized actions to be performed under the attacker's credentials. The CVSS 4.0 base score is 2.1, indicating a low severity impact.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.17.0, which contains the fix for this CSRF vulnerability. No other mitigation or temporary workaround is specified. Patch status is confirmed by the vendor recommendation to upgrade.
CVE-2026-49871: CWE-352 Cross-Site Request Forgery (CSRF) in Apache Software Foundation Apache APISIX
Description
A Cross-Site Request Forgery (CSRF) vulnerability exists in the cas-auth plugin of Apache APISIX under default configurations. This flaw allows a remote attacker to cause a victim's browser to authenticate as a different identity by sending the victim to a malicious webpage. Consequently, actions performed by the victim upstream are attributed to the attacker's identity. The vulnerability affects Apache APISIX versions from 3.0.0 through 3.16.0. Upgrading to version 3.17.0 addresses this 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 in the cas-auth plugin of Apache APISIX. Under default settings, an attacker can trick a victim into authenticating as the attacker by directing the victim's browser to a crafted webpage. This results in the victim's upstream actions being attributed to the attacker's identity. The issue affects Apache APISIX versions 3.0.0 through 3.16.0. The vendor recommends upgrading to version 3.17.0 to fix the vulnerability.
Potential Impact
An attacker who successfully exploits this vulnerability can cause a victim's browser to authenticate as the attacker, leading to misattribution of the victim's upstream actions to the attacker's identity. This could potentially allow unauthorized actions to be performed under the attacker's credentials. The CVSS 4.0 base score is 2.1, indicating a low severity impact.
Mitigation Recommendations
Users should upgrade Apache APISIX to version 3.17.0, which contains the fix for this CSRF vulnerability. No other mitigation or temporary workaround is specified. Patch status is confirmed by the vendor recommendation to upgrade.
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: 6/19/2026, 2:05:57 PM
Last enriched: 6/19/2026, 2:20:46 PM
Last updated: 6/19/2026, 3:29:48 PM
Views: 3
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