Document Gallery <= 5.1.1 - Reflected XSS via data-shortcode Attribute

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• stated Document Gallery<= 5.1.1
• vendor Dan Rossiter Document Galleryversion unspecified
• vendor Unknown Document Galleryversion unspecified

How to fix CVE-2026-74920

• Recommended remediation

  Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

• Official advisories

  • CIRCL Vulnerability Lookup · vulnerability.circl.lu
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 15, 2026 · CISA KEV

   Known exploited

   Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

2. Oct 15, 2026 · NIST NVD

   Detected

   The Document Gallery WordPress plugin through 5.1.1 does not properly sanitise and escape user input before reflecting it inside an HTML attribute in the response of an unauthenticated AJAX action, leading to a Reflected Cross-Site Scripting vulnerability which can be exploited against any visitor, including a logged-in administrator.

3. Oct 15, 2026 · NIST NVD

   Updated

   The Document Gallery WordPress plugin through 5.1.1 does not properly sanitise and escape user input before reflecting it inside an HTML attribute in the response of an unauthenticated AJAX action, leading to a Reflected Cross-Site Scripting vulnerability which can be exploited against any visitor, including a logged-in administrator.

4. Oct 15, 2026 · NIST NVD

   Updated

   The Document Gallery WordPress plugin through 5.1.1 does not properly sanitise and escape user input before reflecting it inside an HTML attribute in the response of an unauthenticated AJAX action, leading to a Reflected Cross-Site Scripting vulnerability which can be exploited against any visitor, including a logged-in administrator.

Sources

• CIRCL Vulnerability LookupVulnerability recordCVE-2026-74920

  The Document Gallery WordPress plugin through 5.1.1 does not properly sanitise and escape user input before reflecting it inside an HTML attribute in the response of an unauthenticated AJAX action, leading to a Reflected Cross-Site Scripting vulnerability which can be exploited a

  vulnerability.circl.lu
• CVE.orgVulnerability recordCVE-2026-74920

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-74920

  30-day exploitation probability 0.1%

  first.org
• NIST NVDVulnerability recordCVE-2026-74920

  The Document Gallery WordPress plugin through 5.1.1 does not properly sanitise and escape user input before reflecting it inside an HTML attribute in the response of an unauthenticated AJAX action, leading to a Reflected Cross-Site Scripting vulnerability which can be exploited a

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2026-74920

  The Document Gallery WordPress plugin through 5.1.1 does not properly sanitise and escape user input before reflecting it inside an HTML attribute in the response of an unauthenticated AJAX action, leading to a Reflected Cross-Site Scripting vulnerability which can be exploited a

  vulncheck.com

References

• VulnCheck exploitation evidence · patchstack.com
• Reference · wpscan.com

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.