What is CVE-2026-102399?

CVE-2026-102399 is a medium-severity vulnerability in Supsystic Photo Gallery By, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-09-30.

How severe is CVE-2026-102399?

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

CSRF in Supsystic Photo Gallery By

CVE-2026-102399

Unauthenticated Cross Site Request Forgery (CSRF) in Photo Gallery by Supsystic <= 1.21.0 versions.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2026-09-30 · last modified 2026-09-30.

CVSS v3 metric

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

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

Supsystic Photo Gallery By

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

patchstack.com/database/wordpress/plugin/gallery-by-supsystic/vulnerability/wor… (vdb-entry)

Frequently asked questions

What is CVE-2026-102399?: CVE-2026-102399 is a medium-severity vulnerability in Supsystic Photo Gallery By, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-09-30.
How severe is CVE-2026-102399?: Medium severity. CVSS v3 base score is 5.4 out of 10.