CVE-2026-39893
Critical
Description
Cacti is an open source performance and fault management framework. In versions 1.2.30 and prior, the rfilter request variable was concatenated into a RLIKE SQL clause without sanitization. The endpoint does not require authentication (graph viewing supports guest access via the configured guest user), so the SQLi was reachable pre-auth on installs with guest viewing enabled. This issue was fixed in version 1.2.31.
SeverityCritical
CVSS9.8
Exploit probability—
ProductCacti
PublishedJun 24, 2026
First seenJun 24, 2026
Weakness typeCWE-89SQL injection
How to fix
Update
- cacti cacti1.2.31 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cacti cacti | v < 1.2.31 | 1.2.31 |
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