XSS in Frappe
CVE-2026-3673
An authenticated attacker can store a crafted tag value in _user_tags and trigger JavaScript execution when a victim opens the list/report view where tags are rendered. The vulnerable renderer interpolates tag content into HTML attributes and element content without escaping. This issue affects Frappe: 16.10.10.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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: 0.003 (19.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.7% 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: 0.003 · change: +0.001
Affected products
- Frappe — versions 16.10.10
Weakness classification (CWE)
References
- fluidattacks.com/es/advisories/silvio (Exploit, Third Party Advisory, third-party-advisory)
- github.com/frappe/frappe (Product, product)
Frequently asked questions
- What is CVE-2026-3673?
- CVE-2026-3673 is a medium-severity vulnerability in Frappe, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-22.
- How severe is CVE-2026-3673?
- Medium severity. CVSS v3 base score is 5.4 out of 10.