What is CVE-2025-65734?

CVE-2025-65734 is a medium-severity vulnerability in Openeclass, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-16.

How severe is CVE-2025-65734?

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

XSS in Openeclass

CVE-2025-65734

An authenticated arbitrary file upload vulnerability in the Courses/Work Assignments module of gunet Open eClass v3.11, and fixed in v3.13, allows attackers to execute arbitrary code via uploading a crafted SVG file.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-03-16 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.002 (13.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Openeclass

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

huntr.com/users/apostolides (Third Party Advisory)
github.com/apostolides (Not Applicable)
www.linkedin.com/in/thanos-apostolidis-3255591b1/ (Not Applicable)
huntr.com/bounties/540f743c-fa3e-4be6-9f85-439fff2fc5fe (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-65734?: CVE-2025-65734 is a medium-severity vulnerability in Openeclass, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-03-16.
How severe is CVE-2025-65734?: Medium severity. CVSS v3 base score is 5.4 out of 10.