Server-Side Request Forgery (SSRF) in Palo Alto PAN-OS - CVE-2026-0258
Published: May 19, 2026
Vulnerability identifier: #VU131776
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-0258
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Palo Alto Networks, Inc.
Affected software:
Palo Alto PAN-OS
Palo Alto PAN-OS
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to server-side request forgery (SSRF) in the IKEv2 certificate URL fetching functionality when processing IKEv2 certificate URL fetching. A remote attacker can cause the firewall to send network requests to unintended destinations to cause a denial of service.
This issue is applicable only to configurations with a site-to-site VPN gateway with IKEv2 configured.
How to mitigate CVE-2026-0258
Install security update from vendor's website.