Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | cacti | 1.2.31+ds1-1 | — |
| Debian 13 | cacti | No fix yet | — |
| Debian 12 | cacti | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | cacti | No fix yet | — |
| Ubuntu 26.04 LTS | cacti | No fix yet | — |
| Ubuntu 24.04 LTS | cacti | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 16.04 LTS | cacti | No fix yet | — |
| Ubuntu Pro 14.04 LTS | cacti | No fix yet | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
kx00007/CVE-2026-39902 ★ 0 · Apr 4, 2026
5th RCE OS Command Injection on Data Input
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- WID-SEC-2026-1931 Cacti: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 25, 2026