Critical severity · published Jul 15, 2026
CVE-2026-55652
Wekan: Header-login IP allowlist bypass via X-Forwarded-For spoofing in Wekan allows unauthenticated full account takeover (incl. admin)
9.8
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WE
wekan · wekan
< 9.46 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55652
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55652
github.com
https://github.com/wekan/wekan/commit/b181889a565254bc9bf79379a34fc7f617ccda28
github.com
https://github.com/wekan/wekan/releases/tag/v9.46
github.com
https://github.com/wekan/wekan/security/advisories/GHSA-jggc-qvfc-jr6x
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