CVE-2026-4045: projectsend Auth.php response discrepancy

Severity: low (CVSS 3.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-12 · updated 2026-06-17
Weakness: CWE-203

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.

Affected products

ProjectSend: r1945

References

https://drive.google.com/file/d/1TNwWNTcra2ykx0yXpATPmsPgJxIxOrWb/view?usp=sharing
https://vuldb.com/?ctiid.350657
https://vuldb.com/?id.350657
https://vuldb.com/?submit.769577

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