CVE-2026-39902
Cacti: Authenticated RCE on Data Input
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CVSS v3.1 (listed by NVD)
7.2
HIGH
Scored by github.com (not yet scored by NVD)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0 (listed by NVD)
—
Not scored
CVSS (listed by CVE.org)
7.2
HIGH
Scored by CNA (GitHub_M) · v3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS exploit probability
0.6%
Percentile 46.6%
as of 2026-10-24
CISA KEV
—
Not listed
Attack conditions and impact
Derived from the CNA (via NVD) CVSS 3.1 vector
NetworkAdminNo interaction
Confidentiality HIntegrity HAvailability H
| Metric | Value | Meaning |
|---|---|---|
| Attack vector AV | N | Network |
| Attack complexity AC | L | Low (easy) |
| Privileges required PR | H | Administrator |
| User interaction UI | N | None |
| Scope S | U | Unchanged |
| Confidentiality C | H | High |
| Integrity I | H | High |
| Availability A | H | High |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Description
NVD
Cacti is an open source performance and fault management framework. Prior to version 1.2.31, the prior blocklist ([;&| `$\\n\r]) omitted single-quote, double-quote, redirect operators, subshell parens and braces. An authenticated admin could save an input_string` containing single-quote, redirect operator, or subshell parens, and pass the check. This issue has been patched in version 1.2.31.
CVSS assessments
| Provider | Version | Score | Vector |
|---|---|---|---|
| NVD / [email protected] (Secondary) | 3.1 | 7.2 HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| CNA / GitHub_M | 3.1 | 7.2 HIGH | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products and packages
CNA (CVE.org)
| Vendor | Product | Versions |
|---|---|---|
| Cacti | cacti | affected: < 1.2.31 |
Linux distribution status
References (2)
- https://github.com/Cacti/cacti/pull/7112 NVD, CNA x_refsource_MISC
- https://github.com/Cacti/cacti/security/advisories/GHSA-c4qp-j9r9-fq24 NVD, CNA x_refsource_CONFIRM