VulnerabilityModified

CVE-2020-8184

A reliance on cookies without validation/integrity check security vulnerability exists in rack < 2.2.3, rack < 2.1.4 that makes it is possible for an attacker to forge a secure or host-only cookie prefix.

HIGH 7.5EPSS 2.94%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS: 2.94% probability · 87th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-784, CWE-20
Affected: rack project/rack · debian/debian linux · canonical/ubuntu linux
Source: support@hackerone.com

EPSS trend

EPSS 2.9% since 26 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/OWtmozPH9AkMailing List, Patch, Third Party Advisory
https://hackerone.com/reports/895727Exploit, Patch, 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/OWtmozPH9AkMailing List, Patch, Third Party Advisory
https://hackerone.com/reports/895727Exploit, Patch, 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.