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CVE Vulnerability Details :
CVE-2026-0266
PUBLISHED
More InfoOfficial Page
Assigner-palo_alto
Assigner Org ID-d6c1279f-00f6-4ef7-9217-f89ffe703ec0
View Known Exploited Vulnerability (KEV) details
Published At-10 Jun, 2026 | 20:30
Updated At-11 Jun, 2026 | 14:36
Rejected At-
▼CVE Numbering Authority (CNA)
PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface

A cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store 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.

Affected Products
Vendor
Palo Alto Networks, Inc.Palo Alto Networks
Product
Cloud NGFW
Default Status
unaffected
Versions
Unaffected
  • All (custom)
Vendor
Palo Alto Networks, Inc.Palo Alto Networks
Product
PAN-OS
CPEs
  • 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:2.3:o:palo_alto_networks:pan-os:12.1.2:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.10:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.9:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.8:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.6:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.5:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.4:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.3:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.2:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.1:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.2.0:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.13:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.12:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.11:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.10:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.9:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.8:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.6:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.5:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.4:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.3:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.2:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.1:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:11.1.0:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.18:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.17:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.16:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.15:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.14:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.13:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.12:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.11:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.9:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.8:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.7:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.6:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.5:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.4:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.3:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.2:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.1:*:*:*:*:*:*:*
  • cpe:2.3:o:palo_alto_networks:pan-os:10.2.0:*:*:*:*:*:*:*
Default Status
unaffected
Versions
Affected
  • From 12.1.0 before 12.1.5 (custom)
    • -> unaffectedfrom12.1.5
  • From 11.2.0 before 11.2.11 (custom)
    • -> unaffectedfrom11.2.11
  • From 11.1.0 before 11.1.14 (custom)
    • -> unaffectedfrom11.1.14
  • 10.2.0 (custom)
Vendor
Palo Alto Networks, Inc.Palo Alto Networks
Product
Prisma Access
Default Status
unaffected
Versions
Unaffected
  • All (custom)
Problem Types
TypeCWE IDDescription
CWECWE-79CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: CWE
CWE ID: CWE-79
Description: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
4.01.1LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
4.00.4LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Version: 4.0
Base score: 1.1
Base severity: LOW
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Version: 4.0
Base score: 0.4
Base severity: LOW
Vector:
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-592CAPEC-592 Stored XSS
CAPEC ID: CAPEC-592
Description: CAPEC-592 Stored XSS
Solutions

VERSION MINOR VERSION SUGGESTED SOLUTION Cloud NGFW No action needed. PAN-OS 12.1 12.1.2 through 12.1.4 Upgrade to 12.1.5 or later. PAN-OS 11.2 11.2.0 through 11.2.10 Upgrade to 11.2.11 or later. PAN-OS 11.1 11.1.0 through 11.1.13 Upgrade to 11.1.14 or later. PAN-OS 10.2 10.2.0 through 10.2.18 Upgrade to 11.1.14, 11.2.11, 12.1.5 or later. All older   Upgrade to a supported fixed version. unsupported PAN-OS versions Prisma Access No action needed.

Configurations

No special configuration is required to be affected by this issue.

Workarounds

No known workarounds or mitigations exist for this issue.

Exploits

Palo Alto Networks is not aware of any malicious exploitation of this issue.

Credits

other
Palo Alto Networks thanks Rajnish Gupta (internal reporter), James Otten (internal reporter), and Jasper Westerman of REQON B.V. for discovering and reporting this issue.
Timeline
EventDate
Initial publication.2026-06-10 16:00:00
Event: Initial publication.
Date: 2026-06-10 16:00:00
Replaced By

Rejected Reason

References
HyperlinkResource
https://security.paloaltonetworks.com/CVE-2026-0266
vendor-advisory
Hyperlink: https://security.paloaltonetworks.com/CVE-2026-0266
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Details not found