CVE-2026-39902

CVSS 7.2 (high) · published 2026-10-23

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.

Weakness: CWE-78

Source: NVD CVE-2026-39902

References

• https://github.com/Cacti/cacti/pull/7112
• https://github.com/Cacti/cacti/security/advisories/GHSA-c4qp-j9r9-fq24

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