Cross-source route access via unscoped CAS sessions
Published Jun 19, 2026 · Updated Jun 19, 2026
Improper authentication in Apache APISIX 3.0.0 through 3.16.0 allows remote authenticated users to access routes through another CAS source. The cas-auth plugin reuses a fixed CAS_SESSION cookie and shared session entry across routes without binding either value to the route's identity provider and callback. Exploitation requires a valid CAS session from one configured source and another cas-auth route on the same host, granting that session access across the trust boundary.
Summary
What happened
Improper authentication in Apache APISIX 3.0.0 through 3.16.0 allows remote authenticated users to access routes through another CAS source. The cas-auth plugin reuses a fixed CAS_SESSION cookie and shared session entry across routes without binding either value to the route's identity provider and callback. Exploitation requires a valid CAS session from one configured source and another cas-auth route on the same host, granting that session access across the trust boundary.
The record
- CVE
- CVE-2026-49872
- Published
- Jun 19, 2026
- Updated
- Jun 19, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache APISIX
- Classifications
- CWE-287, T1078
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 19, 2026CVE publishedPublication date reported by the CVE source.
- Jun 19, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=3.0.0 <=3.16.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
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Your stack
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