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TI-2026-20668 Aliases CVE-2026-25561GHSA-5q4r-452w-ggwq

WeKan < 8.19 Attachment Upload Object Relationship Validation Bypass

Priority LOW 33CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

WeKan versions prior to 8.19 contain an authorization weakness in the attachment upload API. The API does not fully validate that provided identifiers (such as boardId, cardId, swimlaneId, and listId) are consistent and refer to a coherent card/board relationship, enabling attempts to upload attachments with mismatched object relationships.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00314 24th percentileScored 2026-11-07
Fix Fixed WeKan (WeKan): 8.19

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
wekanWeKanbefore 8.198.19Patch availableCNA
  • WeKan Vendorwekan Affected before 8.19 Fixed in 8.19 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wekan_project:wekan:*:*:*:*:*:*:*:*before 8.19Vulnerablewekan
  • cpe:2.3:a:wekan_project:wekan:*:*:*:*:*:*:*:* Versions before 8.19 Vulnerable ·wekan

Remediation

  • Fix · CNA WeKan (WeKan) Fixed in 8.19

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    WeKan 8.19

    9 records Highest priority Priority MEDIUM 1 MEDIUM, 8 LOW

    Other records, highest priority first

    • TI-2026-20667 WeKan < 8.19 LDAP Authentication Filter InjectionPriority MEDIUM 47
    • TI-2026-20675 WeKan < 8.19 allowPrivateOnly Setting Enforcement BypassPriority LOW 31
    • TI-2026-20673 WeKan < 8.19 Cross-board Card Move Without Destination AuthorizationPriority LOW 31
    Show all 9 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25561
  2. 2026-10-03 Alias added: GHSA-5q4r-452w-ggwq

References

Patch 1

Other 1

  • TI-2026-01855 WeKan Activity Publication activities.js LinkedBoardActivitiesBleed information disclosure CVSS 4.0MEDIUM 6.9
  • TI-2023-13025 A stored cross-site scripting (Stored XSS) vulnerability in file preview in WeKan before… CVSS 3.1MEDIUM 5.4
  • TI-2026-20667 WeKan < 8.19 LDAP Authentication Filter Injection CVSS 4.0HIGH 8.7
  • TI-2026-23675 Wekan Exposes All Global Webhook Integrations through globalwebhooks Publication CVSS 4.0HIGH 8.7
  • TI-2026-23673 Wekan Vulnerable to SSRF through Lack of Validation or Filtering in Attachment URL Loading CVSS 4.0CRITICAL 9.3
  • TI-2026-23672 Wekan has Cross-Board IDOR in Custom Fields Update Endpoints CVSS 4.0CRITICAL 9.3
See all 38 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences