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Vulnerability details: VCID-k5z7-q82d-tue6
Vulnerability ID VCID-k5z7-q82d-tue6
Aliases CVE-2026-26988
GHSA-h3rv-q4rq-pqcv
Summary LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below contain an SQL Injection vulnerability in the ajax_table.php endpoint. The application fails to properly sanitize or parameterize user input when processing IPv6 address searches. Specifically, the address parameter is split into an address and a prefix, and the prefix portion is directly concatenated into the SQL query string without validation. This allows an attacker to inject arbitrary SQL commands, potentially leading to unauthorized data access or database manipulation. This issue has been fixed in version 26.2.0.
Status Published
Exploitability 0.5
Weighted Severity 8.4
Risk 4.2
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 1e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-26988
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-h3rv-q4rq-pqcv
generic_textual HIGH https://github.com/librenms/librenms
cvssv4 9.3 https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
generic_textual HIGH https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
ssvc Track https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
cvssv4 9.3 https://github.com/librenms/librenms/pull/18777
generic_textual HIGH https://github.com/librenms/librenms/pull/18777
ssvc Track https://github.com/librenms/librenms/pull/18777
cvssv3.1_qr HIGH https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
cvssv4 9.3 https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
generic_textual HIGH https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
ssvc Track https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-26988
15429580baba03ed1dd377bada1bde4b7a1175a1 https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
18777 https://github.com/librenms/librenms/pull/18777
CVE-2026-26988 https://nvd.nist.gov/vuln/detail/CVE-2026-26988
GHSA-h3rv-q4rq-pqcv https://github.com/advisories/GHSA-h3rv-q4rq-pqcv
GHSA-h3rv-q4rq-pqcv https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
No exploits are available.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-02-20T15:31:39Z/ Found at https://github.com/librenms/librenms/commit/15429580baba03ed1dd377bada1bde4b7a1175a1
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/librenms/librenms/pull/18777
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-02-20T15:31:39Z/ Found at https://github.com/librenms/librenms/pull/18777
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-02-20T15:31:39Z/ Found at https://github.com/librenms/librenms/security/advisories/GHSA-h3rv-q4rq-pqcv
Exploit Prediction Scoring System (EPSS)
Percentile 4e-05
EPSS Score 1e-05
Published At June 14, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:44:34.328066+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/26xxx/CVE-2026-26988.json 38.6.0