What is CVE-2025-12691?

CVE-2025-12691 is a medium-severity vulnerability in Sayontan Photonic Gallery & Lightbox For Flickr, Smugmug Others, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-11-18.

How severe is CVE-2025-12691?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Sayontan Photonic Gallery & Lightbox For Flickr, Smugmug Others

CVE-2025-12691

The Photonic Gallery & Lightbox for Flickr, SmugMug & Others plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's lightbox functionality in all versions up to, and including, 3.21 due to insufficient input sanitization and output escaping on user supplied caption attribute. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the injected page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (8.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Sayontan Photonic Gallery & Lightbox For Flickr, Smugmug Others — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2025-12691?: CVE-2025-12691 is a medium-severity vulnerability in Sayontan Photonic Gallery & Lightbox For Flickr, Smugmug Others, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-11-18.
How severe is CVE-2025-12691?: Medium severity. CVSS v3 base score is 6.4 out of 10.