TI-2021-03881 Aliases CVE-2021-20654 GHSA-p4j3-3c38-6j6r

Cross-site scripting in Wekan

LOW 26CWE-79Published 2021-02-10 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Wekan, open source kanban board system, between version 3.12 and 4.11, is vulnerable to multiple stored cross-site scripting. This is named 'Fieldbleed' in the vendor's site.

Why it matters now

EPSS 0.0076 55th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Wekan Team	Wekan	versions between 3.12 and 4.11	—	No fix listed	CNA

Wekan VendorWekan Team Affected versions between 3.12 and 4.11 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:wekan_project:wekan::::::::	3.12 – 4.11	Vulnerable	wekan

cpe:2.3:a:wekan_project:wekan:*:*:*:*:*:*:*:* Versions 3.12 – 4.11 Vulnerable ·wekan

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-20654
2026-10-03 Alias added: GHSA-p4j3-3c38-6j6r

References

Exploit 1

https://wekan.github.io/hall-of-fame/fieldbleed/

Advisory 1

https://jvn.jp/en/jp/JVN80785288/

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