Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below is vulnerable to a critical authentication bypass when REVERSE_PROXY_AUTH is enabled. The application blindly trusts HTTP headers for user authentication without verifying the request originated from a trusted reverse proxy. An attacker can impersonate any user, including administrators, by simply sending a spoofed HTTP header. This issue is fixed in version 1.2.49.
Metrics
Affected Vendors & Products
References
History
Thu, 08 Jan 2026 18:15:00 +0000
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ssvc
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Thu, 08 Jan 2026 10:00:00 +0000
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Kanboard
Kanboard kanboard |
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| Vendors & Products |
Kanboard
Kanboard kanboard |
Thu, 08 Jan 2026 01:30:00 +0000
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| Description | Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below is vulnerable to a critical authentication bypass when REVERSE_PROXY_AUTH is enabled. The application blindly trusts HTTP headers for user authentication without verifying the request originated from a trusted reverse proxy. An attacker can impersonate any user, including administrators, by simply sending a spoofed HTTP header. This issue is fixed in version 1.2.49. | |
| Title | Kanboard is Vulnerable to Reverse Proxy Authentication Bypass | |
| Weaknesses | CWE-287 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-01-08T17:13:05.216Z
Reserved: 2026-01-05T17:24:36.928Z
Link: CVE-2026-21881
Updated: 2026-01-08T17:12:55.062Z
Status : Awaiting Analysis
Published: 2026-01-08T02:15:53.803
Modified: 2026-01-08T18:15:59.500
Link: CVE-2026-21881
No data.
OpenCVE Enrichment
Updated: 2026-01-08T09:47:39Z