CVE catalog

CVE-2020-8184

ruby-rack: CVE-2020-8184

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published: Jun 15, 2020, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.94% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	ruby-rack	sid	`3.2.7-1`	fixed
Debian	ruby-rack	forky	`3.2.7-1`	fixed
Debian	ruby-rack	trixie	`3.1.20-0+deb13u1`	fixed
Debian	ruby-rack	trixie-security	`3.1.20-0+deb13u2`	fixed
Debian	ruby-rack	bookworm	`2.2.22-0+deb12u1`	fixed
Debian	ruby-rack	bookworm-security	`2.2.22-0+deb12u2`	fixed
Ubuntu	ruby-rack	pro	`1.5.2-1`	vulnerable
Ubuntu	ruby-rack	pro	`1.5.2-1ubuntu0.1~esm1`	vulnerable
Ubuntu	ruby-rack	pro	`1.5.2-3+deb8u3ubuntu1~esm2`	vulnerable
Ubuntu	ruby-rack	pro	`1.5.2-3+deb8u3ubuntu1~esm3`	vulnerable
Ubuntu	ruby-rack	pro	`1.5.2-3+deb8u3ubuntu1~esm4`	fixed
Ubuntu	ruby-rack	16.04	`1.5.2-4`	vulnerable
Ubuntu	ruby-rack	16.04	`1.6.4-2`	vulnerable
Ubuntu	ruby-rack	16.04	`1.6.4-3`	vulnerable
Ubuntu	ruby-rack	16.04	`1.6.4-3ubuntu0.1`	vulnerable
Ubuntu	ruby-rack	16.04	`1.6.4-3ubuntu0.2`	fixed
Ubuntu	ruby-rack	18.04	`1.6.4-4`	vulnerable
Ubuntu	ruby-rack	18.04	`1.6.4-4ubuntu0.1`	vulnerable
Ubuntu	ruby-rack	18.04	`1.6.4-4ubuntu0.2`	fixed
Ubuntu	ruby-rack	20.04	`2.0.6-3`	vulnerable
Ubuntu	ruby-rack	20.04	`2.0.7-2`	vulnerable
Ubuntu	ruby-rack	20.04	`2.0.7-2ubuntu0.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	ruby-rack	source	sid	`2.1.1-6`	not yet assigned	Not reported	[963477]
Debian	ruby-rack	source	forky	`2.1.1-6`	not yet assigned	Not reported	[963477]
Debian	ruby-rack	source	trixie	`2.1.1-6`	not yet assigned	Not reported	[963477]
Debian	ruby-rack	source	bookworm	`2.1.1-6`	not yet assigned	Not reported	[963477]
Ubuntu	ruby-rack	deb	pro	`1.5.2-3+deb8u3ubuntu1~esm4`	Not reported	UBUNTU-CVE-2020-8184	Not reported
Ubuntu	ruby-rack	deb	16.04	`1.6.4-3ubuntu0.2`	Not reported	UBUNTU-CVE-2020-8184	Not reported
Ubuntu	ruby-rack	deb	18.04	`1.6.4-4ubuntu0.2`	Not reported	UBUNTU-CVE-2020-8184	Not reported
Ubuntu	ruby-rack	deb	20.04	`2.0.7-2ubuntu0.1`	Not reported	UBUNTU-CVE-2020-8184	Not reported

[Debian bug #963477]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[ruby-rack]Unknown
Details (4)
- 2.2.22-0+deb12u1 · all · bookworm
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · bookworm; dsa · ruby-rack · debian · 12
- 2.2.22-0+deb12u1 · all · bookworm
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · bookworm; dsa · ruby-rack · debian · 12
- 2.2.22-0+deb12u2 · all · bookworm-security
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · bookworm; dsa · ruby-rack · debian · 12
- 2.2.22-0+deb12u2 · all · bookworm-security
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · bookworm; dsa · ruby-rack · debian · 12

[Debian 13 (Trixie)]

[ruby-rack]Unknown
Details (5)
- 3.1.20-0+deb13u1 · all · trixie
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · 13
- 3.1.20-0+deb13u1 · all · trixie
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · 13
- 3.1.20-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · 13
- 3.1.20-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · 13
- 3.1.20-0+deb13u2 · all · trixie-security
  Fixed · Fixed: 2.1.1-6
  dsa · ruby-rack · debian · 13

Observed: Oct 23, 2026, 5:53:31 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]