CVE-2026-52307

An authenticated stored cross-site scripting (XSS) vulnerability in the Column Management component of ClassCMS 1CMS v5.6 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the title field.

CVSS v3.1 CNA

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.29% chance of exploitation in the next 30 days, 20th percentile

Published

2026-09-08

Updated

2026-09-14

Proof-of-concept exploits (1)

• linan-OO/CVE-2026-523070★ · 2026-09-08

References

• CVE Record
• NVD entry