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PatchSiren cyber security CVE debrief

CVE-2026-11911 eemitch CVE debrief

The Simple File List plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the eeSFL_DeleteFile function in all versions up to, and including, 6.3.7. This makes it possible for unauthenticated attackers 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). The simplefilelist_edit_job AJAX action is registered via wp_ajax_nopriv_, making it accessible without authentication, and the is_admin() guard that would otherwise restrict access is bypassed because is_admin() always returns true for requests to the admin-ajax.php endpoint. Defenders should prioritize patching or mitigating this vulnerability as it poses a high risk of remote code execution.

Vendor
eemitch
Product
Simple File List
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-20
Original CVE updated
2026-06-22
Advisory published
2026-06-20
Advisory updated
2026-06-22

Who should care

Defenders responsible for WordPress installations with the Simple File List plugin installed should prioritize patching or mitigating this vulnerability. The vulnerability's high CVSS score of 7.5 and potential for remote code execution make it a critical concern. WordPress administrators, security teams, and plugin maintainers should take immediate action to limit exposure.

Technical summary

The Simple File List plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the eeSFL_DeleteFile function. The simplefilelist_edit_job AJAX action is registered via wp_ajax_nopriv_, making it accessible without authentication. The is_admin() guard is bypassed because is_admin() always returns true for requests to the admin-ajax.php endpoint. This allows unauthenticated attackers to delete arbitrary files on the server, potentially leading to remote code execution.

Defensive priority

High priority due to potential for remote code execution via arbitrary file deletion.

Recommended defensive actions

  • Apply the latest patch or update to version 6.3.8 or later
  • Limit access to the admin-ajax.php endpoint
  • Monitor for suspicious file deletion activity
  • Implement compensating controls to restrict file deletion
  • Review and update incident response plans

Evidence notes

The CVE record and NVD detail provide evidence of the vulnerability's existence and its potential impact. The source references from Wordfence provide additional context and details about the vulnerability. Defenders should verify the affected product and version, and review official sources for updates and patches.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11911 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11911

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-11911 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11911

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.