CVE-2026-29794
published 2026-03-20CVE-2026-29794: 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…
PriorityP433medium5.3CVSS 3.1
AVNACLPRNUINSUCNINAL
EPSS
0.33%
24.6th percentile
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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| code.vikunja.io | api | >= 0.8 < 2.2.0 | 2.2.0 |
| go-vikunja | vikunja | — | — |
| vikunja | vikunja | >= 0.8 < 2.2.0 | 2.2.0 |
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OSV
Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers in code.vikunja.io/api
osv·2026-03-23
CVE-2026-29794 Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers in code.vikunja.io/api
Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers in code.vikunja.io/api
Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers in code.vikunja.io/api.
NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.
(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)
The additional affected modules and versions are: code.vikunja.io/api from v0.8.0 before v2.2.0.
OSV
Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers
osv·2026-03-20
CVE-2026-29794 [MEDIUM] Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers
Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers
### Summary
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`.
### Details
In the first file below, the rate-limit for unauthenticated users can be observed being populated with the `ip` value. In the second file, it shows it using the `c.RealIP()` function for the `ip` case. Due to this, the rate-limit will rely on the value of one of the two mentioned headers (`X-Forwarded-For` or `X-Real-IP`). These can be spoofed by users client-side in order to completely bypass any unauthenticated rate-limits in place.
Some reverse proxies like Traefik will overwrite
GHSA
Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers
ghsa·2026-03-20
CVE-2026-29794 [MEDIUM] CWE-807 Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers
Vikunja has a Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers
### Summary
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`.
### Details
In the first file below, the rate-limit for unauthenticated users can be observed being populated with the `ip` value. In the second file, it shows it using the `c.RealIP()` function for the `ip` case. Due to this, the rate-limit will rely on the value of one of the two mentioned headers (`X-Forwarded-For` or `X-Real-IP`). These can be spoofed by users client-side in order to completely bypass any unauthenticated rate-limits in place.
Some reverse proxies like Traefik will overwrite
No detection rules found.
No public exploits indexed.
2026-03-20
Published