SB2026090797 - Multiple vulnerabilities in Wekan

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Main Vulnerability Database SB2026090797

SB2026090797 - Multiple vulnerabilities in Wekan

Published: September 7, 2026

Security Bulletin ID SB2026090797
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Information disclosure (CVE-ID: N/A)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to improper access control in the user-authenticationMethod Meteor DDP publication when handling unauthenticated DDP subscription requests. A remote attacker can subscribe using an arbitrary user ID, email address, or username to disclose sensitive information.

The exposed fields include authentication methods, team memberships, and organization memberships.


2) Authorization Bypass Through User-Controlled SQL Primary Key (CVE-ID: N/A)

CWE-ID: CWE-566 - Authorization Bypass Through User-Controlled SQL Primary Key

CVSSv4: 7.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to take over arbitrary Wekan accounts.

The vulnerability exists due to improper authorization in the OIDC login handler\'s Object.assign merge of JWT claims into serviceData when processing an OIDC login with attacker-controlled JWT claims. A remote user can supply a JWT claim that overwrites an identity field to take over arbitrary Wekan accounts.

Exploitation requires OIDC authentication to be configured and the administrator to whitelist an identity field such as id, username, or email.


3) Improper control of interaction frequency (CVE-ID: N/A)

CWE-ID: CWE-799 - Improper Control of Interaction Frequency

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper control of interaction frequency in the forgotPassword DDP method in server/models/users.js when processing repeated password-reset requests. A remote attacker can submit repeated forgotPassword requests to cause a denial of service.

SMTP must be configured for exploitation.


Remediation

Install update from vendor's website.

References