Vulnerability Details CVE-2026-49871
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 13.4%
CVSS Severity
CVSS v3 Score 9.3
Products affected by CVE-2026-49871
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cpe:2.3:a:apache:apisix:3.0.0
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cpe:2.3:a:apache:apisix:3.1.0
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cpe:2.3:a:apache:apisix:3.10.0
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cpe:2.3:a:apache:apisix:3.11.0
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cpe:2.3:a:apache:apisix:3.12.0
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cpe:2.3:a:apache:apisix:3.13.0
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cpe:2.3:a:apache:apisix:3.14.0
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cpe:2.3:a:apache:apisix:3.14.1
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cpe:2.3:a:apache:apisix:3.15.0
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cpe:2.3:a:apache:apisix:3.16.0
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cpe:2.3:a:apache:apisix:3.2.0
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cpe:2.3:a:apache:apisix:3.2.1
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cpe:2.3:a:apache:apisix:3.2.2
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cpe:2.3:a:apache:apisix:3.3.0
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cpe:2.3:a:apache:apisix:3.4.0
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cpe:2.3:a:apache:apisix:3.4.1
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cpe:2.3:a:apache:apisix:3.5.0
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cpe:2.3:a:apache:apisix:3.6.0
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cpe:2.3:a:apache:apisix:3.6.1
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cpe:2.3:a:apache:apisix:3.7.0
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cpe:2.3:a:apache:apisix:3.8.0
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cpe:2.3:a:apache:apisix:3.8.1
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cpe:2.3:a:apache:apisix:3.9.0
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cpe:2.3:a:apache:apisix:3.9.1