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CVE-2026-0316: PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability

ROUTINE

Telemetry drift only. No threshold crossed and no authority ruling changed.

CVE record, CISA KEV and EPSS as of 2026-10-18.

CVEs like this one computed, by meaning

What to do now held facts and links

  1. Upgrade to the fixed version for your release line, or later: 12.2.4; 12.1.10-h2; 11.2.16; 11.1.16-h3; 12.1.7-h8 CVE record
  2. Record your decision, dated and frozen with today's evidence: patch by a date · mitigated by a compensating control · deferred · accepted the risk · not affected
  3. Check your version against the ranges this record publishes.

What it is stated by the CNA

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. The security risk posed by this issue is minimized when the management interface is restricted to only trusted internal IP addresses according to our recommended  best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .  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 these vulnerabilities.

weakness
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
affected
Palo Alto Networks Cloud NGFW; Palo Alto Networks PAN-OS; Palo Alto Networks Prisma Access
versions
No affected-version range in held sources.
fixed in
12.2.4; 12.1.10-h2; 11.2.16; 11.1.16-h3; 12.1.7-h8
severity
1.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
assigned by
palo_alto
published
2026-10-14

check us security.paloaltonetworks.com

Exploit code held, dated

exploit code
None held in the PoC-in-GitHub feed. A public repository changes this brief.

Outside the record researched, cited

This section reads the record's references and adds cited findings from outside it. It needs an account. Everything above is held facts and is complete without it.

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What would change this brief held, dated

CISA KEV
Not listed in the catalogue we hold. A listing changes this brief.
exploit probability
0.00 on 2026-10-15 (FIRST's EPSS, a probability and not evidence of exploitation). Next band line: 10% (0.10). Crossing a line changes this brief.
fix
Held: 12.2.4; 12.1.10-h2; 11.2.16; 11.1.16-h3; 12.1.7-h8. A newer fix from the CNA or OSV changes this brief.

Watch this CVE What counts as a move

How to check this

Every value above is held with two dates: when it was true upstream (as_of) and when we recorded it (tx_from). Re-derive the exploit probability as it stood on any date:

SELECT value, source, source_version, as_of, tx_from
FROM volatile_valid_as_of('CVE-2026-0316', '2026-10-30T23:59:59.999999Z', now());