CVE-2020-8184

Name: CVE-2020-8184
Creator: NVD / NIST
Published: 2020-06-19T17:15:18.757+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.94%

Last modified Jun 17, 2026

CVE-2020-8184 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 2.94% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.94%

85.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rack Project	Rack	< 2.1.4
Rack Project	Rack	>= 2.2.0, < 2.2.3
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Canonical	Ubuntu Linux	18.04

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

Timeline

Published: Jun 19, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8184?

How severe is CVE-2020-8184?

CVE-2020-8184 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.94% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8184?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8184?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST