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CVE-2025-65778

Good to know:

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Date: December 15, 2025

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.

Severity Score

Related Resources (6)

https://github.com/wekan/wekan/commit/e9a727301d7b4f1689a703503df668c0f4f4cab8
https://github.com/wekan/wekan/blob/main/CHANGELOG.md#v816-2025-11-02-wekan--release
https://wekan.fi/hall-of-fame/spacebleed/
https://nvd.nist.gov/vuln/detail/CVE-2025-65778
https://github.com/wekan/wekan
https://www.mend.io/vulnerability-database/CVE-2025-65778

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Top Fix

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Upgrade Version

Upgrade to version https://github.com/wekan/wekan.git - v18.16

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

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