CVE-2026-29794

MEDIUM 5.3

Vikunja has Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

Vikunja is an open-source self-hosted task management platform. Starting in version 0.8 and prior to version 2.2.0, unauthenticated users are able to bypass the application's built-in rate-limits by spoofing the `X-Forwarded-For` or `X-Real-IP` headers due to the rate-limit relying on the value of `(echo.Context).RealIP`. Unauthenticated users can abuse endpoints available to them for different potential impacts. The immediate concern would be brute-forcing usernames or specific accounts' passwords. This bypass allows unlimited requests against unauthenticated endpoints. Version 2.2.0 patches the issue.

CWE	CWE-807
Vendor	go-vikunja
Product	vikunja
Published	Mar 20, 2026
Last Updated	Mar 20, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected Versions

go-vikunja / vikunja

>= 0.8, < 2.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-m547-hp4w-j6jx vikunja.io: https://vikunja.io/changelog/vikunja-v2.2.0-was-released