Information disclosure in Lin-Snow Ech0
CVE-2026-79660
Ech0 versions before 4.7.3 expose guest commenter email addresses through public API endpoints due to improper JSON serialization tags on the Comment model. Unauthenticated attackers can harvest all commenter emails by calling the /api/comments and /api/comments/public endpoints without authentication.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (33.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.1% 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: 0.004 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/lin-snow/Ech0/security/advisories/GHSA-rj4g-rqgh-rx9h (vendor-advisory)
- www.vulncheck.com/advisories/ech0-before-email-disclosure-via-public-api (third-party-advisory)
Frequently asked questions
- What is CVE-2026-79660?
- CVE-2026-79660 is a medium-severity vulnerability in Lin-Snow Ech0, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-08-25.
- How severe is CVE-2026-79660?
- Medium severity. CVSS v3 base score is 5.3 out of 10.