TI-2026-25727 Aliases CVE-2026-33316 GHSA-vq4q-79hh-q767

Vikunja’s Improper Access Control Enables Bypass of Administrator-Imposed Account Disablement

HIGH 70CWE-284Published 2026-03-24 · Updated 2026-03-26

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.

Summary

Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.0, a flaw in Vikunja’s password reset logic allows disabled users to regain access to their accounts. The `ResetPassword()` function sets the user’s status to `StatusActive` after a successful password reset without verifying whether the account was previously disabled. By requesting a reset token through `/api/v1/user/password/token` and completing the reset via `/api/v1/user/password/reset`, a disabled user can reactivate their account and bypass administrator-imposed account disablement. Version 2.2.0 patches the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00377 31st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed vikunja (go-vikunja): 2.2.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
go-vikunja	vikunja	before 2.2.0	2.2.0	Patch available	CNA
—	code.vikunja.io/api (Go)	up to 2.1.0	—	No fix listed	GHSA-vq4q-79hh-q767

vikunja Vendorgo-vikunja Affected before 2.2.0 Fixed in 2.2.0 Patch available CNA
code.vikunja.io/api (Go) Vendor— Affected up to 2.1.0 Fixed in — No fix listed GHSA-vq4q-79hh-q767

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:vikunja:vikunja::::::::	before 2.2.0	Vulnerable	go-vikunja

cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:* Versions before 2.2.0 Vulnerable ·go-vikunja

Remediation

Fix · CNA vikunja (go-vikunja) Fixed in 2.2.0

Timeline

2026-10-02 Threatist record created from CVE-2026-33316
2026-10-03 Alias added: GHSA-vq4q-79hh-q767

References

Exploit 1

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-vq4q-79hh-q767

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-33316

Other 2

TI-2026-21967 Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change CVSS 3.1CRITICAL 9.1
TI-2026-26971 Vikunja ahs a TOTP Two-Factor Authentication Bypass via OIDC Login Path CVSS 3.1CRITICAL 9.1
TI-2026-26060 Vikunja Vulnerable to Link Share Hash Disclosure via ReadAll Endpoint Enables Permission Escalation CVSS 3.1HIGH 7.5
TI-2026-20965 Vikunja Affected by XSS Via Task Preview CVSS 4.0HIGH 8.6
TI-2026-27698 Vikunja Affected by Privilege Escalation via Project Reparenting CVSS 3.1HIGH 8.3
TI-2026-25726 Vikunja has a 2FA Bypass via Caldav Basic Auth CVSS 4.0MEDIUM 6.9

See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences