What is CVE-2026-107323?

CVE-2026-107323 is a medium-severity vulnerability in Gallery Photoblocks, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-10.

How severe is CVE-2026-107323?

Medium severity. CVSS v3 base score is 6.8 out of 10.

XSS in Gallery Photoblocks

CVE-2026-107323

The Gallery PhotoBlocks WordPress plugin before 1.3.6 does not sanitize and escape one of its gallery settings before outputting it into an HTML attribute, allowing users with Contributor-level access and above to store JavaScript that executes in the browser of anyone who views a page containing the gallery, including administrators.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-10 · last modified 2026-10-10.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Gallery Photoblocks

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wpscan.com/vulnerability/19a8c2db-fb31-4203-83d6-139b35c93a80/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-107323?: CVE-2026-107323 is a medium-severity vulnerability in Gallery Photoblocks, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-10-10.
How severe is CVE-2026-107323?: Medium severity. CVSS v3 base score is 6.8 out of 10.