XSS in Frappe

CVE-2026-28436

Frappe is a full-stack web application framework. Prior to versions 16.11.0 and 15.102.0, an attacker can set a crafted image URL that results in XSS when the avatar is displayed, and it can be triggered for other users via website page comments. This issue has been patched in versions 16.11.0 and 15.102.0.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-28436: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • Frappe — versions < 16.11.0, < 15.102.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-28436?
CVE-2026-28436 is a high-severity vulnerability in Frappe, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-03-05.
How severe is CVE-2026-28436?
High severity. CVSS v3 base score is 7.2 out of 10.