SB2026020596 - Server-Side Request Forgery (SSRF) in GLPI

Description

This security bulletin contains information about 2 vulnerabilities.

1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-22247)

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Green

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in the Webhook feature. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

2) Deserialization of Untrusted Data (CVE-ID: CVE-2026-22248)

CWE-ID: CWE-502 - Deserialization of Untrusted Data

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to deserialization of untrusted data in PHP instantiation handling when uploading a malicious file. A remote privileged user can upload a malicious file and trigger its execution to execute arbitrary code.

Remediation

Install update from vendor's website.

References

• https://github.com/glpi-project/glpi/security/advisories/GHSA-f6f6-v3qr-9p5x
• https://github.com/glpi-project/glpi/security/advisories/GHSA-c9q3-mcxq-9vr4
• https://github.com/advisories/GHSA-c9q3-mcxq-9vr4