CVE-2026-54347Public exploitNetwork attack vectorHinoki check available

Admin account takeover via stored XSS

Published Aug 18, 2026 · Updated Aug 19, 2026

Stored XSS in the DNS editor in Froxlor before 2.3.8 allows remote authenticated users to run JavaScript in an administrator session. TXT record content accepted by lib/Froxlor/Api/Commands/DomainZones.php can retain HTML metacharacters, Text::wordwrap returns that data without escaping, and templates/Froxlor/table/table.html.twig renders the callback result through a raw Twig branch. Exploitation requires customer-level DNS editor access and an administrator visit to the affected domain's DNS view, after which script execution can steal the admin session or issue privileged panel actions.

CVSS severity8.7
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in the DNS editor in Froxlor before 2.3.8 allows remote authenticated users to run JavaScript in an administrator session. TXT record content accepted by lib/Froxlor/Api/Commands/DomainZones.php can retain HTML metacharacters, Text::wordwrap returns that data without escaping, and templates/Froxlor/table/table.html.twig renders the callback result through a raw Twig branch. Exploitation requires customer-level DNS editor access and an administrator visit to the affected domain's DNS view, after which script execution can steal the admin session or issue privileged panel actions.

The record

CVE
CVE-2026-54347
Published
Aug 18, 2026
Updated
Aug 19, 2026
Vendor
Froxlor
Product
Froxlor
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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=< 2.3.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Froxlor · Froxlorversion=< 2.3.8

Published CVSS scores

8.7GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/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

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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