CVE-2026-39948

Cacti is an open source performance and fault management framework. In versions 1.2.30 and prior, the rfilter request parameter is retrieved via the raw accessor grv() (rather than gfrv() with FILTER_VALIDATE_IS_REGEX validation) and concatenated directly into RLIKE SQL clauses in lib/html_graph.php and lib/html_tree.php, which are reachable pre-authentication through graph_view.php on installations with guest graph viewing enabled. Because the unbalanced-quote payload bypasses the regex validation that would otherwise reject it, an unauthenticated attacker can inject arbitrary SQL to compromise the confidentiality, integrity, and availability of the database. This advisory is similar to GHSA-69gg-mjfm-jjpc. This issue has been fixed in version 1.2.31.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/Cacti/cacti/commit/136ae6ef0715e77bca69c0eb60781f5e17df0795	Patch
https://github.com/Cacti/cacti/security/advisories/GHSA-9jqv-4cpm-vm2c	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cacti:cacti:*:*:*:*:*:*:*:*

History

25 Jun 2026, 15:10

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8
References	~~() https://github.com/Cacti/cacti/commit/136ae6ef0715e77bca69c0eb60781f5e17df0795 -~~	() https://github.com/Cacti/cacti/commit/136ae6ef0715e77bca69c0eb60781f5e17df0795 - Patch
References	~~() https://github.com/Cacti/cacti/security/advisories/GHSA-9jqv-4cpm-vm2c -~~	() https://github.com/Cacti/cacti/security/advisories/GHSA-9jqv-4cpm-vm2c - Patch, Vendor Advisory
First Time		Cacti Cacti cacti
CPE		cpe:2.3:a:cacti:cacti::::::::

24 Jun 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-24 23:16

Updated : 2026-06-26 05:16

NVD link : CVE-2026-39948

Mitre link : CVE-2026-39948

CVE.ORG link : CVE-2026-39948

JSON object : View

Products Affected

cacti

cacti

CWE

CWE-89

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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