CVE-2026-13423 — CRITICAL (9.8)

Vulnerability Description

The Streamit WordPress theme through 4.5.0 does not perform any authorization or nonce verification on one of its unauthenticated AJAX routes, which invokes an attacker-supplied PHP function with an attacker-supplied argument array, allowing unauthenticated attackers to call arbitrary functions (for example to create an administrator account), leading to privilege escalation and remote code execution.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-94

References

https://wpscan.com/vulnerability/f85c5da1-412f-4079-8c44-708bc78c2b9b/

FAQ

What is CVE-2026-13423?

CVE-2026-13423 is a vulnerability with a CVSS score of 9.8 (CRITICAL). The Streamit WordPress theme through 4.5.0 does not perform any authorization or nonce verification on one of its unauthenticated AJAX routes, which invokes an attacker-supplied PHP function with an a...

How severe is CVE-2026-13423?

CVE-2026-13423 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-13423?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.