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GHSA-g84x-g96g-rcjcmedium5.4

Librenms has a reflected XSS on error alert

Impact

XSS on the parameters:/addhost -> param: community

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

librenms/librenms Packagist
Affected rangeRecorded fix
Earlier releases before 24.11.0Ecosystem versions24.11.0

Version evidence: OSV · GHSA-g84x-g96g-rcjc

View original version evidence (132 explicit versions)

Original source description

XSS on the parameters:/addhost -> param: community

of Librenms versions 24.10.1 (https://github.com/librenms/librenms) allows remote attackers to inject malicious scripts. When a user views or interacts with the page displaying the data, the malicious script executes immediately, leading to potential unauthorized actions or data exposure.

Proof of Concept:

  1. Navigate to the /addhost path.

  2. Fill in all required fields.

  3. In the Community field, enter the following payload: "><img src=a onerror="alert(1)">. image

  4. Submit the form to save changes. 5 The script will execute when the error alert "No reply with community + payload" appears. image

Impact:

Execution of Malicious Code

References