CVE-2026-14466

Data disclosure via stored group-comment script

Published Sep 4, 2026 · Updated Sep 4, 2026

Stored XSS in Stormshield Network Security 4.8.0 through 4.8.16 and 5.0.0 through 5.0.6 allows remote authenticated users to read data. The webservices administration interface stores script injected into a group's comments without neutralizing it before the web panel renders the comment. Exploitation requires an appropriately privileged SNS administrator on an adjacent network to save the comment and a user to view it; script execution affects confidentiality only.

CVSS severity4.3
Medium
EPSS probability0.16%
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 Stormshield Network Security 4.8.0 through 4.8.16 and 5.0.0 through 5.0.6 allows remote authenticated users to read data. The webservices administration interface stores script injected into a group's comments without neutralizing it before the web panel renders the comment. Exploitation requires an appropriately privileged SNS administrator on an adjacent network to save the comment and a user to view it; script execution affects confidentiality only.

The record

CVE
CVE-2026-14466
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
Stormshield
Product
Stormshield Network Security
Classifications
CWE-79, T1059.007
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=4.8.0 <=4.8.16
  2. Affected versionversion=5.0.0 <=5.0.6

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

Stormshield · Stormshield Network Securityversion=4.8.0 <=4.8.16; version=5.0.0 <=5.0.6

Published CVSS scores

4.3StormshieldCVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
3.8StormshieldCVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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