PatchSiren cyber security CVE debrief
CVE-2026-11997 seo_tools CVE debrief
The Bulk SEO Image plugin for WordPress is vulnerable to Cross-Site Request Forgery (CSRF) in versions up to and including 1.1. This vulnerability stems from missing or incorrect nonce validation on the plugin's settings page handler, BulkSeoImage(). Specifically, the plugin does not emit a wp_nonce_field() in the form and does not perform a check_admin_referer()/wp_verify_nonce() before bulk-overwriting the _wp_attachment_image_alt post meta for every image attached to every published post and/or page. As a result, unauthenticated attackers can bulk-overwrite image ALT-text metadata across the site via a forged request, provided they can trick a site administrator into performing an action such as clicking on a link. The vulnerability has a CVSS score of 4.3 and a severity rating of MEDIUM.
- Vendor
- seo_tools
- Product
- Bulk SEO Image
- CVSS
- MEDIUM 4.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-24
- Original CVE updated
- 2026-06-25
- Advisory published
- 2026-06-24
- Advisory updated
- 2026-06-25
Who should care
Site administrators and owners using the Bulk SEO Image plugin for WordPress, especially those with published posts and/or pages, should be aware of this vulnerability. The ability for unauthenticated attackers to modify image metadata could be exploited for various malicious purposes, including SEO manipulation or misinformation campaigns. Users of the affected plugin versions should prioritize updating to a patched version as soon as possible.
Technical summary
The Bulk SEO Image plugin for WordPress, up to and including version 1.1, is vulnerable to Cross-Site Request Forgery (CSRF). The plugin's settings page handler, BulkSeoImage(), does not properly validate nonces, allowing for unauthorized actions. Specifically, the plugin fails to include a wp_nonce_field() in the form and does not perform the necessary check_admin_referer() or wp_verify_nonce() checks. This oversight enables attackers to forge requests that can bulk-overwrite _wp_attachment_image_alt post meta for all images attached to published posts and/or pages. The vulnerability's CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N, reflecting its MEDIUM severity and 4.3 score.
Defensive priority
Given the MEDIUM severity and potential for exploitation, defenders should prioritize patching the Bulk SEO Image plugin to version 1.2 or later. Immediate action is recommended for site administrators and owners using the affected plugin versions.
Recommended defensive actions
- Update the Bulk SEO Image plugin to version 1.2 or later.
- Review and implement proper nonce validation for similar functionality in other plugins or custom code.
- Monitor site activity for suspicious bulk changes to image metadata.
- Educate site administrators on the risks of clicking on links from untrusted sources.
- Consider implementing additional security measures such as Content Security Policy (CSP) to mitigate CSRF attacks.
Evidence notes
The vulnerability details were obtained from the CVE record and the National Vulnerability Database (NVD). The CVE-2026-11997 record provides an overview of the vulnerability, including its description, CVSS score, and affected versions. The NVD entry offers additional technical details and references to the plugin's source code.
Official resources
This article is AI-assisted and based on the supplied source corpus.