CVE-2026-0308 PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
A malicious authenticated administrator can execute JavaScript payloads via the PAN-OS web interface, potentially compromising the firewall management console.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-0308?
CVE-2026-0308 is a low-severity cross-site scripting vulnerability in Palo Alto Networks Cloud NGFW, published on 10 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store or execute a JavaScript payload using the web interface.
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not affected by this vulnerability.
Weakness: CWE-79
Which versions are affected by CVE-2026-0308?
How do I fix CVE-2026-0308?
No fix has been published for CVE-2026-0308 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-0308 being exploited?
There is no known exploitation of CVE-2026-0308 in the wild and no public exploit code.
Sources
Also known as GHSA-c76w-v7qc-mx3r.