CVE-2026-0308Network attack vector

Administrator-level script execution via stored web payload

Published Sep 10, 2026 · Updated Sep 10, 2026

Stored XSS in the Palo Alto Networks PAN-OS web interface allows remote authenticated users with administrator rights to execute JavaScript. Palo Alto Networks has not disclosed the affected input or missing output-encoding operation, only that the web interface stores or executes the supplied payload. Exploitation requires administrator access and passive interaction in the management interface; the payload is limited to browser-context data access and modification.

CVSS severity4.8
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the Palo Alto Networks PAN-OS web interface allows remote authenticated users with administrator rights to execute JavaScript. Palo Alto Networks has not disclosed the affected input or missing output-encoding operation, only that the web interface stores or executes the supplied payload. Exploitation requires administrator access and passive interaction in the management interface; the payload is limited to browser-context data access and modification.

The record

CVE
CVE-2026-0308
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
Palo Alto Networks
Product
PAN-OS
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.1.0 <11.1.16-h2 changes=[{"at":"11.1.16-h2","status":"unaffected"}]
  2. Affected versionversion=11.2.0 <11.2.13-h2 changes=[{"at":"11.2.13-h2","status":"unaffected"}]
  3. Affected versionversion=12.1.0 <12.1.10 changes=[{"at":"12.1.10","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Palo Alto Networks · PAN-OSversion=11.1.0 <11.1.16-h2 changes=[{"at":"11.1.16-h2","status":"unaffected"}]; version=11.2.0 <11.2.13-h2 changes=[{"at":"11.2.13-h2","status":"unaffected"}]; version=12.1.0 <12.1.10 changes=[{"at":"12.1.10","status":"unaffected"}]
Palo Alto Networks · Prisma AccessAffected versions are unavailable in this record.

Published CVSS scores

2.4Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
1.1Palo Alto NetworksCVSS: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
4.8Palo Alto NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
0.4Palo Alto NetworksCVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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