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CVE-2026-21881
CRITICAL9.1
Beschreibung
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.
CVE Details
CVSS v3.1 Bewertung9.1
SchweregradCRITICAL
CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
AngriffsvektorNETWORK
KomplexitatLOW
Erforderliche PrivilegienNONE
BenutzerinteraktionNONE
Veroffentlicht1/8/2026
Zuletzt geandert1/20/2026
Quellenvd
Honeypot-Sichtungen0
Betroffene Produkte
kanboard:kanboard
Schwachen (CWE)
CWE-287
Referenzen
https://github.com/kanboard/kanboard/commit/7af6143e2ad25b5c15549cca8af4341c7ac4e2fc(security-advisories@github.com)
https://github.com/kanboard/kanboard/releases/tag/v1.2.49(security-advisories@github.com)
https://github.com/kanboard/kanboard/security/advisories/GHSA-wwpf-3j4p-739w(security-advisories@github.com)
https://github.com/kanboard/kanboard/security/advisories/GHSA-wwpf-3j4p-739w(134c704f-9b21-4f2e-91b3-4a467353bcc0)
IOC Korrelationen
Keine Korrelationen erfasst
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