VulnerabilityModified

CVE-2020-8161

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.

HIGH 8.6EPSS 3.36%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (3.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.1: 8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
EPSS: 3.36% probability · 89th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-548, CWE-22
Affected: rack project/rack · debian/debian linux · canonical/ubuntu linux
Source: support@hackerone.com

EPSS trend

EPSS 3.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

https://groups.google.com/g/rubyonrails-security/c/IOO1vNZTzPAMailing List, Patch, Third Party Advisory
https://hackerone.com/reports/434404Permissions Required, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00006.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00038.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4561-1/Third Party Advisory
https://groups.google.com/g/rubyonrails-security/c/IOO1vNZTzPAMailing List, Patch, Third Party Advisory
https://hackerone.com/reports/434404Permissions Required, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00006.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00038.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4561-1/Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.