Authenticated cross-board writes via unchecked destination card
Published Jul 10, 2026 · Updated Jul 10, 2026
Incorrect authorization in WeKan before 9.64 allows remote authenticated users to write checklist data into private boards via direct DDP updates. The Checklists and ChecklistItems allow rules authorize only against the source doc.cardId, while a hook derives boardId from an unchecked destination cardId. Exploitation requires write access to one board and a target private card ID; it adds attacker-controlled checklist data without exposing existing private content.
Summary
What happened
Incorrect authorization in WeKan before 9.64 allows remote authenticated users to write checklist data into private boards via direct DDP updates. The Checklists and ChecklistItems allow rules authorize only against the source doc.cardId, while a hook derives boardId from an unchecked destination cardId. Exploitation requires write access to one board and a target private card ID; it adds attacker-controlled checklist data without exposing existing private content.
The record
- CVE
- CVE-2026-59154
- Published
- Jul 10, 2026
- Updated
- Jul 10, 2026
- Vendor
- WeKan
- Product
- WeKan
- Classifications
- CWE-863, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 10, 2026CVE publishedPublication date reported by the CVE source.
- Jul 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 9.64
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Source-equivalent checklist cross-board proof scriptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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