CVE-2026-7311

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.

CVSS v3.1 Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS — Exploit Prediction

0.0067

Probability of exploitation

0.48%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-22 Path Traversal

References

Other References

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

Frequently Asked Questions

What is CVE-2026-7311? +

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. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-7311? +

CVE-2026-7311 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0067, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-7311? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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