CVE-2026-91972

HIGHCVSS 7.5

Description

Vikunja versions before 2.6.0 fail to apply rate limiting to /api/v2 public authentication endpoints including login, register, password-reset, and OAuth token routes. Remote unauthenticated attackers can perform unbounded credential guessing, account enumeration, and password-reset flooding attacks without throttling restrictions.

Timeline

Published:September 15th, 2026 4:17 PM

Last modified:September 16th, 2026 8:16 PM

CVSS Scoring

CVSS v3: 7.5 (HIGH)

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

Weaknesses (CWE)

CWE-307

References & Reports

Advisories, patches, and third-party reports

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-6rvj-qwjf-3m4q
https://www.vulncheck.com/advisories/vikunja-before-2.6.0-authentication-bypass-via-unthrottled-api

Source: NIST NVD · Data may lag official sources by up to one minute