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High

Improper Encoding or Escaping of Output and Injection in LibreNMS

  • Disclosed: 11.10.2019
  • Updated: 11.10.2026 10:22

An issue was discovered in LibreNMS 1.50.1. The scripts that handle graphing options (includes/html/graphs/common.inc.php and includes/html/graphs/graphs.inc.php) do not sufficiently validate or encode several fields of user supplied input. Some parameters are filtered with mysqli_real_escape_string, which is only useful for preventing SQL injection attacks; other parameters are unfiltered. This allows an attacker to inject RRDtool syntax with newline characters via the html/graph.php and html/graph-realtime.php scripts. RRDtool syntax is quite versatile and an attacker could leverage this to perform a number of attacks, including disclosing directory structure and filenames, disclosing file content, denial of service, or writing arbitrary files. NOTE, relative to CVE-2019-10665, this requires authentication and the pathnames differ.

Affected software

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PlatformPackageVulnerable versionsFixed in
Composer package librenms/librenms >= 1.50.1, < 1.53 1.53

References

CVSS score 8.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-116, CWE-74
Platform
Composer
Package
librenms/librenms
Disclosed
11.10.2019
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-w5r2-gvgf-mpm8 - CC BY 4.0

Vulnerability history: librenms/librenms

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (106) in the archive
Total entries
106
First → latest
10.2019 08.2026
Without a fix
6
Exploited in attacks
0

Severity breakdown

  • Critical 5
  • High 39
  • Medium 56
  • Low 6

Disclosures per year

Severity:
  1. Improper Encoding or Escaping of Output and Injection in LibreNMS this entry
    High · 8.8 CVE-2019-12463 >= 1.50.1, < 1.53 1.53
  2. LibreNMS — Stored XSS via SNMP/Syslog Data in Legacy Templates
    High · 7.1 CVE-2026-84192 < 26.5.0 26.5.0
  3. LibreNMS: SSRF-driven stored XSS via Oxidized API response fields in device showconfig page
    High · 8.1 CVE-2026-84189 < 26.7.0 26.7.0
  4. LibreNMS Vulnerable to Remote Code Execution by Signal Alert Transportation module
    High CVE-2026-55182 >= 21.6.0, < 26.5.0 26.5.0
  5. LibreNMS is Vulnerable to Remote Code Execution by Arbitrary File Write
    High CVE-2026-6204 >= 1.48, < 26.3.0 26.3.0
  6. LibreNMS has a Time-Based Blind SQL Injection in address-search.inc.php
    High · 8.8 CVE-2026-26990 < 26.2.0 26.2.0
  7. LibreNMS: SQL Injection in ajax_table.php spreads through a covert data stream.
    High CVE-2026-26988 < 26.2.0 26.2.0
  8. LibreNMS contains an authenticated SQL Injection vulnerability
    High · 7.1 CVE-2020-36947 <= 1.46 no fix
  9. LibreNMS has Authenticated Remote File Inclusion in ajax_form.php that Allows RCE
    High · 7.5 CVE-2025-54138 < 25.7.0 25.7.0
  10. LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/device/services.inc.php
    High · 7.5 CVE-2024-52526 < 24.10.0 24.10.0
  11. LibreNMS has an Authenticated OS Command Injection
    Critical · 9.1 CVE-2024-51092 < 24.10.0 24.10.0
  12. LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/print-customoid.php
    High · 7.5 CVE-2024-51497 < 24.10.0 24.10.0
  13. LibreNMS has a Reflected XSS ('Cross-site Scripting') in librenms/includes/html/pages/wireless.inc.php
    High · 7.5 CVE-2024-51496 < 24.10.0 24.10.0
  14. LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/dev-overview-data.inc.php
    High · 7.5 CVE-2024-51495 < 24.10.0 24.10.0
  15. LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/app/Http/Controllers/Table/EditPortsController.php
    High · 7.5 CVE-2024-51494 < 24.10.0 24.10.0
  16. LibreNMS has a Persistent XSS from Insecure Input Sanitization Affects Multiple Endpoints
    High · 7.2 CVE-2024-50355 < 24.10.0 24.10.0
  17. LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/device/overview/services.inc.php
    High · 7.5 CVE-2024-50352 < 24.10.0 24.10.0
  18. LibreNMS has a Reflected XSS ('Cross-site Scripting') in librenms/includes/functions.php
    High · 7.5 CVE-2024-50351 < 24.10.0 24.10.0
  19. LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/app/Http/Controllers/Table/EditPortsController.php
    High · 7.5 CVE-2024-50350 < 24.10.0 24.10.0
  20. LibreNMS has a Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/device/capture.inc.php
    High · 7.5 CVE-2024-49764 < 24.10.0 24.10.0
  21. Stored XSS ('Cross-site Scripting') in librenms/includes/html/pages/edituser.inc.php
    High · 7.5 CVE-2024-49759 < 24.10.0 24.10.0
Show more (20) Showing 21 of 44

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