CVE-2025-65778: An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16

Q: How do I fix CVE-2025-65778?

wekan: upgrade to 8.16. Exact commands for each OS are on this page.

Q: Is CVE-2025-65778 being exploited?

CVE-2025-65778 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-2025-65778 affect?

CVE-2025-65778 affects wekan. Severity is high (CVSS 8.1). An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16. Uploaded attachments can be served with attacker-controlled Content-Type (text/html), allowing execution of attacker-supplied HTML/JS

Routine

HIGH 8.1UPGRADE

CVE-2025-65778 is a high-severity flaw (CVSS 8.1) affecting wekan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16. Uploaded attachments can be served with attacker-controlled Content-Type (text/html), allowing execution of attacker-supplied HTML/JS in the application's origin and enabling session/token theft and CSRF actions.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-12-15
Last modified	2026-10-14

Publisher (CNA): MITRE · Vendor: wekan project

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-15 14:15 UTCPublished CVE record published
2026-10-14 13:10 UTCUpdated Record last modified

wekan project wekan UPGRADE

Affected: < 8.16

Fixed in: 8.16

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 8.16 (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-2025-65778?

wekan: upgrade to 8.16. Exact commands for each OS are on this page.

Is CVE-2025-65778 being exploited?

CVE-2025-65778 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-2025-65778 affect?

CVE-2025-65778 affects wekan. Severity is high (CVSS 8.1). An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16. Uploaded attachments can be served with attacker-controlled Content-Type (text/html), allowing execution of attacker-supplied HTML/JS

How urgent is CVE-2025-65778?

Priority 36/100. High severity

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-2025-65782 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
CVE-2026-25859 HIGH 8.8 UPGRADE Wekan versions prior to 8.20 allow non-administrative users to access migration functionality due to insuffici

References

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