CVE-2026-4045 projectsend Auth.php response discrepancy
Remote attackers can exploit response discrepancies in ProjectSend authentication to potentially disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4045?
CVE-2026-4045 is a medium-severity vulnerability in projectsend, published on 12 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in projectsend up to r1945. This impacts an unknown function of the file includes/Classes/Auth.php. Executing a manipulation of the argument ldap_email can lead to observable response discrepancy. The attack can be executed remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-4045?
How do I fix CVE-2026-4045?
No fix has been published for CVE-2026-4045 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4045 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4045 exists.
Sources
Also known as GHSA-gwpq-jg4g-7ww7.