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OpenAdvisories
Critical · 9.8 CVE-2026-39893 EUVD-2026-39131

Cacti: Pre-authentication SQL injection via rfilter RLIKE clause in graph_view.php

Published Jun 24, 2026 · Updated Jun 26, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
Cacti cacti < 1.2.31 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 cacti 1.2.31+ds1-1 —
Debian 13 cacti No fix yet —
Debian 12 cacti No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 cacti No fix yet —
Ubuntu 26.04 LTS cacti No fix yet —
Ubuntu 25.10 cacti No fix yet —
Ubuntu 24.04 LTS cacti No fix yet —
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 22.04 LTS cacti No fix yet —
Ubuntu Pro 20.04 LTS cacti No fix yet —
Ubuntu Pro 18.04 LTS cacti No fix yet —
Ubuntu Pro 14.04 LTS cacti No fix yet —

Advisories 1

References