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CVE-2020-36599

OmniAuth's `lib/omniauth/failure_endpoint.rb` does not escape `message_key` value

9.8 CriticalFix available

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.20%Up 0.3 points since Aug 19, 2022
90%50%10%1%

What each source reports

NVD Score used 9.8

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Record
CVE-2020-36599
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-116
Updated
2026-11-02
CVE List No score

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Record
CVE-2020-36599
Updated
2026-11-02
EUVDEUVD-2022-6596 No score

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Record
EUVD-2022-6596
Updated
2026-11-03
GitHub AdvisoriesGHSA-pm55-qfxr-h247 9.8

OmniAuth's `lib/omniauth/failure_endpoint.rb` does not escape `message_key` value

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Record
GHSA-pm55-qfxr-h247
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-116
Updated
2026-11-02
OSV 9.8

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Record
CVE-2020-36599
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2020-36599 9.8

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Record
DEBIAN-CVE-2020-36599
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-pm55-qfxr-h247 9.8

OmniAuth's `lib/omniauth/failure_endpoint.rb` does not escape `message_key` value

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Record
GHSA-pm55-qfxr-h247
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-116
Updated
2026-11-02
OSVUBUNTU-CVE-2020-36599 9.8

lib/omniauth/failure_endpoint.rb in OmniAuth before 1.9.2 (and before 2.0) does not escape the message_key value.

Record
UBUNTU-CVE-2020-36599
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
omniauth
RubyGems
 before 1.9.2
1.9.2
omniauth
RubyGems
 2.0.0.pre.rc1 to 2.0.0.pre.rc1
2.0.0
ruby-omniauth
Debian:12
 before 2.0.4-2
2.0.4-2
ruby-omniauth
Debian:13
 before 2.0.4-2
2.0.4-2
ruby-omniauth
Debian:14
 before 2.0.4-2
2.0.4-2
omniauth
RubyGems
 before 1.9.2, plus listed versions
0.0.10.0.30.0.40.0.50.1.0
Show 45 moreShow less
0.1.10.1.20.1.30.1.40.1.50.1.60.2.00.2.0.beta10.2.0.beta20.2.0.beta30.2.0.beta40.2.0.beta50.2.10.2.20.2.30.2.40.2.50.2.60.3.00.3.0.rc30.3.21.0.01.0.0.beta11.0.0.pr11.0.0.pr21.0.0.rc11.0.0.rc21.0.11.0.21.0.31.1.01.1.11.1.21.1.31.1.41.2.11.2.21.3.01.3.11.3.21.4.01.4.11.4.21.4.31.5.0
1.9.2
omniauth
RubyGems
 2.0.0.pre.rc1 up to 2.0.0
2.0.0
ruby-omniauth
Ubuntu:16.04:LTS
 All versions, plus listed versions
1.2.2-31.3.1-11.3.1-1+deb9u1build0.16.04.1
 None known
ruby-omniauth
Ubuntu:18.04:LTS
 All versions, plus listed versions
1.3.1-11.3.1-21.6.1-2
 None known
ruby-omniauth
Ubuntu:20.04:LTS
 All versions, plus listed versions
1.8.1-11.9.0-1
 None known
Show 5 moreShow less
Affected packages
PackageAffectedFixed
ruby-omniauth
Ubuntu:22.04:LTS
 All versions, plus listed versions
1.9.1-1
 None known
ruby-omniauth
Ubuntu:24.04:LTS
 All versions, plus listed versions
2.1.1-1
 None known
ruby-omniauth
Ubuntu:25.10
 All versions, plus listed versions
2.1.1-4
 None known
ruby-omniauth
Ubuntu:26.10
 All versions, plus listed versions
2.1.4-1
 None known
ruby-omniauth
Ubuntu:26.04:LTS
 All versions, plus listed versions
2.1.1-42.1.4-1
 None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-36599 is a critical vulnerability (CVSS 9.8) in Omniauth, published August 18, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.20%, the 68th percentile. Fixed in omniauth 1.9.2.

References

This page doesn't list everything

Left out here: 8 versions. The JSON record has them.

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