What’s Vulnerable › Vulnerabilities

CVE-2026-27575: Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-25 · updated 2026-06-17
• Weakness: CWE-521

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.

Affected products

• go-vikunja vikunja: before 2.0.0 — fixed in 2.0.0

How to fix

Upgrade to a fixed version: go-vikunja vikunja 2.0.0. Check the vendor advisory for mitigations.

References

• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-3ccg-x393-96v8
• https://vikunja.io/changelog/vikunja-v2.0.0-was-released

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