by Kastro
Paper/Archive/CVE-2026-52893

CVE-2026-52893

wekan wekan — Wekan: OIDC Account Takeover via Unconditional Email-Based Account Merge in onCreateUser hook

EPSS 0.5%public exploitCVSS 9.2
critical.is priorityof 100
46
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 41.4.414 × 208.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

Wekan is open source kanban built with Meteor. Prior to 9.32, the Wekan Accounts.onCreateUser hook in server/models/users.js merges OIDC logins into existing accounts when the OIDC email or username matches an existing Wekan user, without verifying ownership or checking email_verified. An attacker using an OIDC provider account with a victim's email or username can cause Wekan to merge the attacker's OIDC credentials into the victim account and then log in as that account. This issue is fixed in version 9.32.

Affected

ProductAffectedFixed inSource
wekan< 9.32–CNA

Scores by source

GitHub_M (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/wekan/wekan/security/advisories/GHSA-mp7g-hj5q-gxhqrefgithub.com/wekan/wekan/commit/73204d4e0a7d77a1b186b3d76e8eaf2f3e7c9fd9refgithub.com/wekan/wekan/releases/tag/v9.32