CVE-2026-30919Public exploitNetwork attack vector

Authenticated browser-session compromise via stored field injection

Published Mar 9, 2026 · Updated Mar 9, 2026

Stored XSS in facileManager fmDNS before 6.0.4 allows remote authenticated users to execute JavaScript in another user's browser. The user-comment, DNS template-name, and image-branding fields store attacker-controlled attribute text that later enters HTML without sufficient output encoding. Any account can plant a profile payload, but execution requires a victim to revisit Edit Profile or an administrator to open user editing; the script can read or alter data available to that browser session.

CVSS severity7.6
High
EPSS probability0.19%
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 facileManager fmDNS before 6.0.4 allows remote authenticated users to execute JavaScript in another user's browser. The user-comment, DNS template-name, and image-branding fields store attacker-controlled attribute text that later enters HTML without sufficient output encoding. Any account can plant a profile payload, but execution requires a victim to revisit Edit Profile or an administrator to open user editing; the script can read or alter data available to that browser session.

The record

CVE
CVE-2026-30919
Published
Mar 9, 2026
Updated
Mar 9, 2026
Vendor
facileManager
Product
facileManager
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 9, 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=5.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

facileManager · facileManagerversion=5.4.4

Published CVSS scores

7.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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