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

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Summary

CVECVE-2026-55652
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-15 22:17:26 UTC
Updated2026-07-16 13:43:05 UTC
DescriptionWekan 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.003550000 probability, percentile 0.277610000 (date 2026-07-16)

Problem Types: CWE-287 | CWE-290 | CWE-287 CWE-287: Improper Authentication | CWE-290 CWE-290: Authentication Bypass by Spoofing

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wekan Wekan affected < 9.46 Not specified

References

ReferenceSourceLinkTags
github.com/wekan/wekan/commit/b181889a565254bc9bf79379a34fc7f617ccda28 [email protected] github.com
github.com/wekan/wekan/releases/tag/v9.46 [email protected] github.com
github.com/wekan/wekan/security/advisories/GHSA-jggc-qvfc-jr6x [email protected] github.com
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