Vulnerability · Published Jul 30, 2026 · Assigned by VulnCheck

CVE-2026-66414Leantime Open Redirect in Login Controller via redirectUrl Parameter

Medium 6.1

In plain English

A medium-severity open redirect in Leantime from Leantime. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.3%top 71.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Leantime	Leantime	0 – through 3.6.2

Weakness: CWE-601 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Pull Request issue-tracking, patch
GitHub Security Advisory (GHSA-wprg-q8m6-jhp9) vendor-advisory
Product Repository product
https://www.vulncheck.com/advisories/leantime-open-redirect-in-login-controller-via-redirecturl-parameter third-party-advisory