CVE-2026-0316 PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability
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.
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.
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.
Product Status
| Versions | Affected | Unaffected |
|---|---|---|
| Cloud NGFW | None | All |
| PAN-OS 12.2 | < 12.2.4 | >= 12.2.4 |
| PAN-OS 12.1 | < 12.1.10-h2 | >= 12.1.10-h2 |
| PAN-OS 11.2 | < 11.2.16 | >= 11.2.16 (ETA: 10/15) |
| PAN-OS 11.1 | < 11.1.16-h3 | >= 11.1.16-h3 |
| Prisma Access | None | All |
Required Configuration for Exposure
No special configuration is required to be affected by this issue.
Severity: LOW, Suggested Urgency: MODERATE
The risk is highest when you allow access to the management interface from external IP addresses on the internet.
LOW
- CVSS-BT: 1.1 /CVSS-B: 4.8 (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)
You can reduce the risk of exploitation by restricting access to a jump box as the only system allowed to access the management interface.
LOW
- CVSS-BT: 0.4 /CVSS-B: 2.4 (CVSS:4.0/AV:A/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)
Exploitation Status
Palo Alto Networks is not aware of any malicious exploitation of this issue.
Weakness Type and Impact
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Solution
| Version | Minor Version | Suggested Solution |
|---|---|---|
| Cloud NGFW | No action needed. | |
| PAN-OS 12.2 | 12.2.0 through 12.2.3 | Upgrade to 12.2.4 or later. |
| PAN-OS 12.1 |
12.1.2 through 12.1.10-h* | Upgrade to 12.1.10-h2 or later. |
| PAN-OS 11.2 |
11.2.0 through 11.2.15 | Upgrade to 11.2.16 or later. |
| PAN-OS 11.1 |
11.1.0 through 11.1.16-h* | Upgrade to 11.1.16-h3 or later. |
| All older unsupported PAN-OS versions | Upgrade to a supported fixed version. | |
| Prisma Access | No action needed. |
Workarounds and Mitigations
No known workarounds exist for this issue.
Acknowledgments
CPEs
cpe:2.3:o:palo_alto_networks:pan-os:12.2.3:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.2.2:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.10:-:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.9:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.8:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.7:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.6:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.5:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.4:*:*:*:*:*:*:*
cpe:2.3:o:palo_alto_networks:pan-os:12.1.3:*:*:*:*:*:*:*
CPE Applicability
- cpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)12.2.0 and up to (excluding)12.2.4
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)12.1.10 and up to (excluding)12.1.10-h2
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.2.0 and up to (excluding)11.2.16
- ORcpe:2.3:o:palo_alto_networks:pan-os:*:*:*:*:*:*:*:* is vulnerable from (including)11.1.16 and up to (excluding)11.1.16-h3