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CVE-2026-104800: the affected product Unrestricted File Upload (CVSS 9.8)

CVE-2026-104800 is a critical severity unrestricted file upload in the affected product with a CVSS score of 9.8. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Last updated: Oct 14, 2026

Quick answer

Direct answer

CVE-2026-104800 is a critical severity unrestricted file upload in the affected product with a CVSS score of 9.8. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Risk scores

CVSS base score
9.8CRITICAL
EPSS probability
1.03%
Higher than 63 percent of all CVEs
CISA KEV
Not listed
CVSS metricWhat it means
Attack vector (AV:N)Network: reachable remotely
Attack complexity (AC:L)Low complexity
Privileges required (PR:N)No privileges required
User interaction (UI:N)No user interaction
Scope (S:U)Scope unchanged
Confidentiality (C:H)High confidentiality impact
Integrity (I:H)High integrity impact
Availability (A:H)High availability impact

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

About the affected product

CVE-2026-104800 affects the affected product. Before acting, confirm where the affected product runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.

What the flaw is

In plain terms: The AGE-GATE plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.0 via the 'width (and height)' parameter parameter. This is due to missing authentication, capability checks, and nonce verification on the standalone admin.php endpoint, combined with unsanitized injection of POST parameters directly into generated PHP source written to an included file. This makes it possible for unauthenticated attackers to execute code on the server. This is possible because admin.php does not load WordPress and carries no ABSPATH guard, making it a fully unauthenticated entry point regardless of the decorative capability arguments registered via the plugin's simulated menu API.

The weakness class is Unrestricted File Upload. Dangerous file types, such as scripts, can be uploaded and run.

Based on its CVSS vector, the flaw can be reached over the network, needs no login, and needs no user interaction. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Affected versions and timeline

FieldDetail
Productthe affected product
Affected versionsSee the vendor advisory under Technical References
PublishedOct 14, 2026
Last modifiedOct 14, 2026
Added to CISA KEVNot listed
Assigning CNAsecurity@wordfence.com

How to detect it

  • Inventory every instance of the affected product and record the running version against the affected range above.
  • Check external attack surface scans for internet facing instances of the component.
  • Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
  • Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.

How to fix it

  • Apply the fixed version of the affected product named in the vendor advisory.
  • If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
  • Rescan after the change to prove the exposure is gone, then close the ticket.

CTEM action plan

CTEM stageWhat to do for this CVE
ScopeAdd every business service that depends on the affected product to the current CTEM cycle.
DiscoverFind all instances, including shadow and cloud deployments, and record versions and exposure.
PrioritizeRank using EPSS and CVSS together with asset exposure and business impact.
ValidateConfirm the flaw is reachable and exploitable in your environment and that compensating controls work.
MobilizeAssign the fix to the asset owner with a due date matched to the priority, then verify closure.

CWE References

Technical References

Frequently asked questions

CVE-2026-104800 is a critical severity unrestricted file upload in the affected product with a CVSS score of 9.8. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

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