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CVE-2020-8161
A directory traversal vulnerability exists in rack < 2.2.0 that allows an attacker perform directory traversal vulnerability in the…
- 8.6HighCVSS base score
- 3.4%Exploitation in 30 daysEPSS · top 11% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A directory traversal vulnerability exists in rack < 2.2.0 that allows an attacker perform directory traversal vulnerability in the Rack::Directory app that is bundled with Rack which could result in information disclosure.
Timeline
ID reserved
By hackerone
- 5 months later
· 5 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 3.4% · top 11% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.
Affected products
https://github.com/rack/rack
- affected Fixed in 2.1.3, >= 2.2.0
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- RubyGemsrackGHSA-5f9h-9pjv-v6j7 (opens in a new tab)
References
References5
- https://hackerone.com/reports/434404 (opens in a new tab)x_transferred
- https://groups.google.com/g/rubyonrails-security/c/IOO1vNZTzPA (opens in a new tab)x_transferred
- [debian-lts-announce] 20200710 [SECURITY] [DLA 2275-1] ruby-rack security update (opens in a new tab)mailing-listx_transferred
- USN-4561-1 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20230130 [SECURITY] [DLA 3298-1] ruby-rack security update (opens in a new tab)mailing-listx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-0537 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-5f9h-9pjv-v6j7 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-8161)Record last updated .