Vulnerability · Published Jul 15, 2026 · Assigned by GitHub_M

CVE-2026-55652Wekan: Header-login IP allowlist bypass via X-Forwarded-For spoofing in Wekan allows unauthenticated full account takeover (incl. admin)

Critical 9.8

In plain English

A critical-severity improper authentication in wekan from wekan. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.6%top 50.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Wekan is open source kanban built with Meteor. Prior to 9.46, header-login with HEADER_LOGIN_TRUSTED_IPS uses getRequestIp() in server/lib/headerLoginAuth.js to trust the client-supplied X-Forwarded-For header before the real socket address, allowing an unauthenticated attacker to send HEADER_LOGIN_ID for any username and receive a meteor_login_token session, including for admin. This issue is fixed in version 9.46.

Affected products (as reported)

Vendor	Product	Versions
wekan	wekan	< 9.46

Weakness: CWE-287, CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/wekan/wekan/security/advisories/GHSA-jggc-qvfc-jr6x x_refsource_CONFIRM
https://github.com/wekan/wekan/commit/b181889a565254bc9bf79379a34fc7f617ccda28 x_refsource_MISC
https://github.com/wekan/wekan/releases/tag/v9.46 x_refsource_MISC