Open Redirect in Leantime
CVE-2026-66414
Leantime 3.6.2 contains an open redirect vulnerability in the Login controller that allows unauthenticated attackers to redirect authenticated users to arbitrary external sites by manipulating the redirectUrl POST parameter. Attackers can craft a malicious login URL with a tampered redirectUrl value that bypasses FILTER_SANITIZE_URL validation to redirect victims to attacker-controlled sites for phishing or credential theft.
Vulnerability class: Open Redirect
EPSS: 0.002 (9.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Leantime — versions 0
Weakness classification (CWE)
References
- Pull Request (issue-tracking, patch)
- GitHub Security Advisory (GHSA-wprg-q8m6-jhp9) (vendor-advisory)
- Product Repository (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-66414?
- CVE-2026-66414 is a medium-severity vulnerability in Leantime, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2026-07-30.
- How severe is CVE-2026-66414?
- Medium severity. CVSS v3 base score is 6.1 out of 10.