What is CVE-2026-13423?

CVE-2026-13423 is a critical-severity vulnerability in Streamit, classified under Code Injection. CVSS score: 9.8/10. Published 2026-07-29.

How severe is CVE-2026-13423?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Streamit

CVE-2026-13423

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, allowi…

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Unknown Streamit — versions 0

Weakness classification (CWE)

CWE-94 — Code Injection

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-13423?: CVE-2026-13423 is a critical-severity vulnerability in Streamit, classified under Code Injection. CVSS score: 9.8/10. Published 2026-07-29.
How severe is CVE-2026-13423?: Critical severity. CVSS v3 base score is 9.8 out of 10.