All vulnerabilities
CVE-2026-107323

Gallery PhotoBlocks 1.3.5 - Contributor+ Stored XSS

Unknown Gallery PhotoBlocks
Open in ThreatlineRecord JSON
CVSS
6.8Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.29%Chance of exploitation activity in the next 30 days, higher than 20% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.3.6Fixed versionCVE List
Published10 Oct 2026Updated 10 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 1

  • Gallery PhotoBlocksaffected: 1.3.5 before 1.3.6CVE List

References 1