What is CVE-2026-15386?

CVE-2026-15386 is a medium-severity vulnerability in Meow Gallery, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-08-07.

How severe is CVE-2026-15386?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Meow Gallery

CVE-2026-15386

The Meow Gallery WordPress plugin before 5.5.2 does not escape an attachment's alt text before outputting it into an attribute of the link it builds for linked galleries, allowing users with the Author role or above to store a JavaScript payload that executes in the browser of any visitor (including administrators) who views a post containing such a gallery.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (2.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Unknown Meow Gallery — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2026-15386?: CVE-2026-15386 is a medium-severity vulnerability in Meow Gallery, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-08-07.
How severe is CVE-2026-15386?: Medium severity. CVSS v3 base score is 5.4 out of 10.