Auth bypass in Faye
CVE-2020-11020
Faye (NPM, RubyGem) versions greater than 0.5.0 and before 1.0.4, 1.1.3 and 1.2.5, has the potential for authentication bypass in the extension system. The vulnerability allows any client to bypass checks put in place by server-side extensions, by appending extra segments to the message channel. It is patched in versions 1.0.4, 1.1.3 and 1.2.5.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.016 (74.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.016 · change: +0.000
Affected products
- Faye — versions >= 0.5.0, < 1.0.4, >= 1.1.0, < 1.1.3, >= 1.2.0, < 1.2.5
- Faye Project
Weakness classification (CWE)
References
- github.com/faye/faye/security/advisories/GHSA-qpg4-4w7w-2mq5 (Exploit, Third Party Advisory, Mitigation)
- github.com/faye/faye/commit/65d297d341b607f3cb0b5fa6021a625a991cc30e (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-11020?
- CVE-2020-11020 is a high-severity vulnerability in Faye, classified under Improper Authentication. CVSS score: 8.5/10. Published 2020-04-29.
- How severe is CVE-2020-11020?
- High severity. CVSS v3 base score is 8.5 out of 10.