XSS in Brufdev Many Notes
CVE-2025-55474
Many Notes 0.10.1 is vulnerable to Cross Site Scripting (XSS), which allows malicious Markdown files to execute JavaScript when viewed.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Brufdev Many Notes — versions 0.10.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/brufdev/many-notes/releases/tag/v0.10.2 (Release Notes)
- cyber-ducky.com/stored-xss-found-in-many-notes-the-best-note-taking-app/ (Exploit, Third Party Advisory)
- medium.com/@cyberducky/how-i-found-a-stored-xss-in-markdown-rendering-e73cfc3cd… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-55474?
- CVE-2025-55474 is a medium-severity vulnerability in Brufdev Many Notes, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-09-02.
- How severe is CVE-2025-55474?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2025-55474 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.