Critical severity · published Feb 25, 2026
CVE-2026-27575
Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change
9.1
CVSS
0.5%
EPSS
No
On KEV
Description
Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to set weak passwords (e.g., 1234, password) without enforcing minimum strength requirements. Additionally, active sessions remain valid after a user changes their password. An attacker who compromises an account (via brute-force or credential stuffing) can maintain persistent access even after the victim resets their password. Version 2.0.0 contains a fix.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
vikunja · go-vikunja
< 2.0.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27575
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27575
Exploit
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-3ccg-x393-96v8
Release Notes
https://vikunja.io/changelog/vikunja-v2.0.0-was-released
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