CVE-2026-90575 PHPGurukul Small CRM Login Success login.php unserialize deserialization
Remote attackers can exploit unsafe deserialization in the login handler to potentially execute arbitrary code, requiring high complexity.
- 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-2026-90575?
CVE-2026-90575 is a medium-severity unsafe deserialization vulnerability in PHPGurukul Small CRM, published on 13 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in PHPGurukul Small CRM 4.0. This impacts the function unserialize of the file /crm/login.php of the component Login Success Handler. This manipulation of the argument geopluginURL causes deserialization. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is said to be difficult. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-90575?
How do I fix CVE-2026-90575?
No fix has been published for CVE-2026-90575 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-90575 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90575 exists.
Sources
Also known as GHSA-cmr7-8r63-rmg9.