CVE-2024-10855: CWE-639 Authorization Bypass Through User-Controlled Key in sirv Image Optimizer, Resizer and CDN – Sirv
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.
AI Analysis
Technical Summary
The Sirv Image Optimizer, Resizer and CDN plugin for WordPress contains an authorization bypass vulnerability (CWE-639) due to insufficient validation of a user-controlled key (filename parameter) in the sirv_upload_file_by_chunks() function. Authenticated attackers with Contributor or higher privileges can delete arbitrary WordPress option values, potentially triggering site errors and denial of service. This affects all plugin versions up to and including 7.3.0. The CVSS 3.1 base score is 8.1, reflecting network attack vector, low attack complexity, required privileges at the Contributor level, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and high availability impact.
Potential Impact
An attacker with Contributor-level access can delete arbitrary WordPress option values via the vulnerable plugin function, causing site errors that result in denial of service. This compromises the integrity and availability of the affected WordPress site but does not impact confidentiality. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor-level access to trusted users only and monitor for unusual deletion of WordPress options. Avoid using affected versions of the Sirv plugin if possible.
CVE-2024-10855: CWE-639 Authorization Bypass Through User-Controlled Key in sirv Image Optimizer, Resizer and CDN – Sirv
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Sirv Image Optimizer, Resizer and CDN plugin for WordPress contains an authorization bypass vulnerability (CWE-639) due to insufficient validation of a user-controlled key (filename parameter) in the sirv_upload_file_by_chunks() function. Authenticated attackers with Contributor or higher privileges can delete arbitrary WordPress option values, potentially triggering site errors and denial of service. This affects all plugin versions up to and including 7.3.0. The CVSS 3.1 base score is 8.1, reflecting network attack vector, low attack complexity, required privileges at the Contributor level, no user interaction, unchanged scope, no confidentiality impact, high integrity impact, and high availability impact.
Potential Impact
An attacker with Contributor-level access can delete arbitrary WordPress option values via the vulnerable plugin function, causing site errors that result in denial of service. This compromises the integrity and availability of the affected WordPress site but does not impact confidentiality. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Contributor-level access to trusted users only and monitor for unusual deletion of WordPress options. Avoid using affected versions of the Sirv plugin if possible.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-11-05T12:37:00.361Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6dffb7ef31ef0b5927f8
Added to database: 2/25/2026, 9:47:43 PM
Last enriched: 4/9/2026, 5:52:58 AM
Last updated: 4/12/2026, 2:32:32 PM
Views: 13
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.