vulnerability / NVI-00008055 / Revision 1
Froxlor: Stored XSS in DNS TXT Record Content Allows Customer-to-Admin Account Takeover
OSV carries this publisher advisory for froxlor/froxlor. This is an aggregated source copy; consult the original publisher and compare update dates.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
froxlor/froxlor
source listedECOSYSTEM: introduced 0; fixed 2.3.8
### Summary A stored Cross-Site Scripting (XSS) vulnerability in Froxlor's DNS editor allows an authenticated user with DNS editor access (customer role) to inject arbitrary JavaScript into any administrator's browser session. When an administrator views the DNS configuration of an affected domain, the payload executes automatically — enabling complete admin account takeover, credential theft, and full server compromise. --- ### Details Three code locations combine to create this vulnerability: **1. Input validation does not strip HTML special characters** — `lib/Froxlor/Api/Commands/DomainZones.php:158` ```php // Only strips non-printable chars. (0x3C/0x3E) pass through unmodified. $content = preg_replace('/[^\x09\x20-\x7E]/', '', $content); $content = Dns::encloseTXTContent($content); // only wraps in quotes, no HTML encoding ``` **2. Display callback returns raw HTML without escaping** — `lib/Froxlor/UI/Callbacks/Text.php:95` ```php public static function wordwrap(array $attributes): string { return wordwrap($attributes['data'], 100, '', true); // no htmlspecialchars() } ``` **3. Twig template renders the callback output with `|raw`** — `templates/Frox
03 / Response
What to do next
- vendor patch
The original advisory lists fixed boundaries 2.3.8 for froxlor/froxlor. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-43gm-9rr3-cx7g ↗
GitHub Advisory Database via OSV · vendor advisory
Observed . GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.