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Vulnerability record · CVE-2020-8161 · published 2 July 2020

CVE-2020-8161: Rack project rack path traversal vulnerability

Rack Project · Rack

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.

8.6 CVSS 3.1 High EPSS 3.4% · top 11.7% CWE-548 · CWE-548CWE-22 · Path traversal
8.6CVSS 3.1 base score, v2 5.0
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://groups.google.com/g/rubyonrails-security/c/IOO1vNZTzPA Mailing ListPatchThird Party Advisory
https://hackerone.com/reports/434404 Permissions RequiredThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00006.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00038.html Mailing ListThird Party Advisory
https://usn.ubuntu.com/4561-1/ Third Party Advisory
https://groups.google.com/g/rubyonrails-security/c/IOO1vNZTzPA Mailing ListPatchThird Party Advisory
https://hackerone.com/reports/434404 Permissions RequiredThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00006.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00038.html Mailing ListThird Party Advisory
https://usn.ubuntu.com/4561-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-8161), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.