CVE-2026-1963: A vulnerability was found in WeKan up to 8.20

Q: How do I fix CVE-2026-1963?

wekan: upgrade to 8.21. Exact commands for each OS are on this page.

Q: Is CVE-2026-1963 being exploited?

CVE-2026-1963 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-1963 affect?

CVE-2026-1963 affects wekan. Severity is medium (CVSS 6.3). A vulnerability was found in WeKan up to 8.20. This affects an unknown function of the file models/attachments.js of the component Attachment Storage. The manipulation results in improper access controls. The attack may be launched remotely

Q: How urgent is CVE-2026-1963?

Priority 30/100. No elevated risk signals yet.

Routine

MEDIUM 6.3UPGRADE

CVE-2026-1963 is a medium-severity flaw (CVSS 6.3) affecting wekan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in WeKan up to 8.20. This affects an unknown function of the file models/attachments.js of the component Attachment Storage. The manipulation results in improper access controls. The attack may be launched remotely. Upgrading to version 8.21 mitigates this issue. The patch is identified as c413a7e860bc4d93fe2adcf82516228570bf382d. Upgrading the affected component is advised.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-266, CWE-284
Published	2026-02-05
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: wekan project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-05 21:15 UTCPublished CVE record published
2026-06-17 10:16 UTCUpdated Record last modified

wekan project wekan UPGRADE

Affected: < 8.21

Fixed in: 8.21

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wekan || rpm -q wekan || wekan --version

2. UPGRADE to 8.21 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wekan

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wekan

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-1963?

wekan: upgrade to 8.21. Exact commands for each OS are on this page.

Is CVE-2026-1963 being exploited?

CVE-2026-1963 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-1963 affect?

CVE-2026-1963 affects wekan. Severity is medium (CVSS 6.3). A vulnerability was found in WeKan up to 8.20. This affects an unknown function of the file models/attachments.js of the component Attachment Storage. The manipulation results in improper access controls. The attack may be launched remotely

How urgent is CVE-2026-1963?

Priority 30/100. No elevated risk signals yet.

Related CVEs

CVE-2025-65781 HIGH 8.2 UPGRADE An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16
CVE-2025-65780 HIGH 8.8 UPGRADE An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16
CVE-2025-65779 HIGH 7.5 UPGRADE An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16
CVE-2025-65778 HIGH 8.1 UPGRADE An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16
CVE-2025-65782 MEDIUM 6.5 UPGRADE An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16

References

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