Is CVE-2026-90575 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-90575 being exploited in the wild.

How severe is CVE-2026-90575?

Low severity, with a CVSS score of 3.7, published 13 September 2026.

Which products and versions are affected?

Phpgurukul Small Crm 3.0 through 4.0.

Is there a fix for CVE-2026-90575?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-90575 attacked?

It is attacked over the network or from the adjacent network, in a web application.

Am I affected by CVE-2026-90575?

Check whether you run Phpgurukul Small Crm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-90575: PHPGurukul Small CRM insecure deserialization in login handler

CVE-2026-90575 · Severity: low · CVSS 3.7 · Published 2026-09-13

PHPGurukul Small CRM is a web-based customer relationship management application. The login success handler fetches geolocation data over unencrypted HTTP and directly deserializes the response without validation, allowing a network attacker positioned between the CRM server and the geolocation service to inject malicious PHP objects. An attacker with valid credentials and network access can trigger arbitrary code execution on the server.

Technologies: Phpgurukul Small Crm. Vendors: Phpgurukul.

Quick answers

Is CVE-2026-90575 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-90575 being exploited in the wild.
How severe is CVE-2026-90575?: Low severity, with a CVSS score of 3.7, published 13 September 2026.
Which products and versions are affected?: Phpgurukul Small Crm 3.0 through 4.0.
Is there a fix for CVE-2026-90575?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-90575 attacked?: It is attacked over the network or from the adjacent network, in a web application.
Am I affected by CVE-2026-90575?: Check whether you run Phpgurukul Small Crm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This is a PHP object injection vulnerability (CWE-502) in the login success handler (/crm/login.php, lines 18-22). The vulnerable code fetches geolocation data from a third-party service via plaintext HTTP and passes the response directly to unserialize() without restricting allowed_classes. An attacker capable of performing man-in-the-middle attacks (ARP spoofing, DNS poisoning, or network path control) can intercept the HTTP response and inject a serialized payload containing arbitrary PHP objects. When deserialized, this can instantiate gadget chain objects leading to remote code execution if exploitable gadgets are available in the application or its dependencies. Exploitation requires valid CRM credentials and network-level MITM capability.

Affected products

PHPGurukul Small CRM 3.0 through 4.0

Timeline

2026-09-13: disclosed
other: Exploit code released publicly on GitHub

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.