What’s Vulnerable › Vulnerabilities

CVE-2024-10855: Image Optimizer, Resizer and CDN – Sirv <= 7.3.0 - Missing Authorization to Authenticated (Contributor+) Arbitrary Option Deletion

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-20 · updated 2026-06-17
• Weakness: CWE-639

Description

The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to unauthorized modification of data that can lead to a denial of service due to insufficient validation on the filename parameter of the sirv_upload_file_by_chunks() function and lack of in all versions up to, and including, 7.3.0. This makes it possible for authenticated attackers, with Contributor-level access and above, to delete arbitrary option values on the WordPress site. This can be leveraged to delete an option that would create an error on the site and deny service to legitimate users.

Affected products

• sirv Image Optimizer, Resizer and CDN – Sirv: before 7.3.1 — fixed in 7.3.1

How to fix

Upgrade to a fixed version: sirv Image Optimizer, Resizer and CDN – Sirv 7.3.1. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/sirv/tags/7.2.8/sirv.php#L4691
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3186406%40sirv&new=3186406%40sirv&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/d6ec09e5-4994-4d23-bf8e-26b64d5303fa?source=cve

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