What is the CVSS score of CVE-2026-27575?

CVE-2026-27575 has a CVSS 3.1 base score of 9.1 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Vikunja are affected by CVE-2026-27575?

Vikunja versions up to 2.0.0 contain a critical vulnerability (CVSS 9.1) that enables attackers to set weak passwords, potentially compromising user account security and organizational data.

Is there a public PoC exploit available for CVE-2026-27575?

Yes, a public proof-of-concept exploit is available for CVE-2026-27575. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-27575?

Within 24 hours: Inventory all Vikunja deployments and document affected versions; disable or restrict Vikunja access if operationally feasible, or implement compensating controls listed below. Within 7 days: Implement network segmentation to limit Vikunja exposure; enforce multi-factor authentication (MFA) for all Vikunja user accounts; monitor authentication logs for suspicious activity. Within 30 days: Contact Vikunja vendor for patch availability and timeline; evaluate alternative task management solutions; conduct security assessment of all user accounts for unauthorized access or weak credentials.

Vikunja CVE-2026-27575

CRITICAL

Weak Password Requirements (CWE-521)

2026-02-25 security-advisories@github.com

GHSA-3ccg-x393-96v8

Information Disclosure Vikunja Suse

9.1

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

9.1 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SUSE

CRITICAL

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 05, 2026 - 17:21 vuln.today

Public exploit code

CVE Published

Feb 25, 2026 - 22:16 nvd

CRITICAL 9.1

DescriptionGitHub Advisory

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.