{"id":"CVE-2026-29794","summary":"Vikunja has Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers","details":"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.","aliases":["GHSA-m547-hp4w-j6jx","GO-2026-4791"],"modified":"2026-04-10T05:41:45.973438Z","published":"2026-03-20T14:39:59.035Z","related":["SUSE-SU-2026:1135-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29794.json","cwe_ids":["CWE-807"],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://vikunja.io/changelog/vikunja-v2.2.0-was-released"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29794.json"},{"type":"ADVISORY","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-m547-hp4w-j6jx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-29794"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/go-vikunja/vikunja","events":[{"introduced":"021ee48ec3ee4e39616e717a71ccd5f20aba91dd"},{"fixed":"b365be1881641dd2791d3dff4c26ad941c13cef6"}],"database_specific":{"versions":[{"introduced":"0.8"},{"fixed":"2.2.0"}]}}],"versions":["v0.10","v0.11","v0.12","v0.13","v0.14.0","v0.15.0","v0.16.0","v0.17.0","v0.18.0","v0.18.1","v0.19.0","v0.19.1","v0.19.2","v0.20.0","v0.20.1","v0.20.3","v0.20.4","v0.21.0","v0.22.0","v0.22.1","v0.23.0","v0.24.1","v0.8","v0.9","v1.0.0","v1.0.0-rc0","v1.0.0-rc1","v1.0.0-rc2","v1.0.0-rc3","v1.0.0-rc4","v1.1.0","v2.0.0","v2.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29794.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}