CVE-2026-49871
Received Received - Intake
Cross-Site Request Forgery in Apache APISIX

Publication date: 2026-06-19

Last updated on: 2026-06-19

Assigner: Apache Software Foundation

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.
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Meta Information
Published
2026-06-19
Last Modified
2026-06-19
Generated
2026-06-19
AI Q&A
2026-06-19
EPSS Evaluated
N/A
NVD
CVE-2026-49871
EUVD
EUVD-2026-38025
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
apache apisix From 3.0.0 (inc) to 3.16.0 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-352 The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
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Compliance Impact

The provided information does not specify how the Cross-Site Request Forgery (CSRF) vulnerability in the cas-auth plugin of Apache APISIX affects compliance with common standards and regulations such as GDPR or HIPAA.

Executive Summary

CVE-2026-49871 is a Cross-Site Request Forgery (CSRF) vulnerability in the cas-auth plugin of Apache APISIX, affecting versions 3.0.0 through 3.16.0.

This vulnerability allows a remote attacker to trick a victim into visiting a malicious webpage controlled by the attacker. When the victim's browser visits this page, it becomes authenticated as a different identity controlled by the attacker.

As a result, any actions the victim takes upstream are attributed to the attacker's identity, potentially causing unauthorized actions to be performed under the attacker's credentials.

Impact Analysis

This vulnerability can impact you by allowing an attacker to cause your browser to authenticate as a different user without your consent.

Consequently, any actions you perform may be attributed to the attacker's identity, which can lead to unauthorized access, misattribution of actions, and potential security breaches in systems relying on Apache APISIX with the vulnerable cas-auth plugin.

To mitigate this risk, it is recommended to upgrade Apache APISIX to version 3.17.0 where this issue is fixed.

Mitigation Strategies

To mitigate this vulnerability, users are recommended to upgrade Apache APISIX to version 3.17.0, which contains the fix for the Cross-Site Request Forgery (CSRF) issue in the cas-auth plugin.

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