CVE-2026-86427— LibreNMS before 26.8.0 Argument Injection via graph_title
Quick assessment
Affected
librenms librenms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
LibreNMS 在 26.8.0 之前版本中存在一个参数注入漏洞，位于 参数中。已认证的 attacker 可以通过突破双引号转义机制，注入任意的 rrdtool 参数。攻击者可以注入 和 参数，从而读取未授权设备上的 RRD 文件；或者通过换行符注入执行任意 rrdtool 命令，绕过针对每个设备的授权检查。
Possible ATT&CK Techniques 2 AI
T1559 · Inter-Process Communication T1059 · Command and Scripting Interpreter
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-86427
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
LibreNMS before 26.8.0 Argument Injection via graph_title
Source: CVE Program / CVE List V5
Vulnerability Description
LibreNMS before 26.8.0 contains an argument injection vulnerability in the graph_title parameter that allows authenticated attackers to inject arbitrary rrdtool arguments by breaking out of double-quote escaping. Attackers can inject DEF and LINE arguments to read RRD files from unauthorized devices, or use newline injection to execute arbitrary rrdtool commands, bypassing per-device authorization checks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-86427
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-86427
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-86427 (2)
-
-
🔗 LibreNMS before 26.8.0 Argument Injection via graph_title | Advisories | VulnCheck third-party-advisory
IV. Related Vulnerabilities
Same product: librenms
-
CVE-2026-86426
LibreNMS before 26.8.0 Authentication Bypass via API Token T -
CVE-2026-84194
LibreNMS 23.10.0 before 26.4.0 OS Command Injection via Host -
CVE-2026-84193
LibreNMS through 26.2.0 Stored Cross-Site Scripting via SNMP -
CVE-2026-84192
LibreNMS before 26.3.1 Stored XSS via SNMP/Syslog Data -
CVE-2026-84191
LibreNMS before 26.5.0 Stored XSS via SNMP VRF fields
Same vendor: librenms
-
CVE-2026-86426
LibreNMS before 26.8.0 Authentication Bypass via API Token T -
CVE-2026-84194
LibreNMS 23.10.0 before 26.4.0 OS Command Injection via Host -
CVE-2026-84193
LibreNMS through 26.2.0 Stored Cross-Site Scripting via SNMP -
CVE-2026-84192
LibreNMS before 26.3.1 Stored XSS via SNMP/Syslog Data -
CVE-2026-84191
LibreNMS before 26.5.0 Stored XSS via SNMP VRF fields
Same weakness: CWE-77
-
CVE-2026-86295
D-Link DIR-895L udhcpcd serverpacket.c sendACK command injec -
CVE-2026-79698
Advantech WISE-6610-NB Node-RED nodered_lib_apply command in -
CVE-2026-79697
Advantech WISE-6610-NB Basic Station Certificate-Deletion ba -
CVE-2026-53932
wnx/laravel-backup-restore: Improper Neutralization of Speci -
CVE-2026-63694
Dell SmartFabric OS10 Software 命令注入漏洞
V. Comments for CVE-2026-86427
No comments yet