DEBIAN-CVE-2026-54603

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Source
https://security-tracker.debian.org/tracker/CVE-2026-54603
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54603.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-54603
Upstream
Published
2026-07-28T17:16:52Z
Modified
2026-09-10T08:47:32Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

OAuth2 is a Ruby wrapper for the OAuth 2.0 and 2.1 authorization frameworks, including OpenID Connect (OIDC). From 0.4.0 to 2.0.21, a protocol-relative redirect Location returned to OAuth2::Client#request overrides the request authority, so the bearer Authorization header is sent to an attacker-controlled host, leaking the credential. This issue is fixed in version 2.0.22.

References

Affected packages

Debian:12 / ruby-oauth2

Package

Name
ruby-oauth2
Purl
pkg:deb/debian/ruby-oauth2?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.4.4-1
2.*
2.0.7-1
2.0.7-2
2.0.9-1
2.0.17-1
2.0.18-1
2.0.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54603.json"

Debian:13 / ruby-oauth2

Package

Name
ruby-oauth2
Purl
pkg:deb/debian/ruby-oauth2?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.9-1
2.0.17-1
2.0.18-1
2.0.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54603.json"

Debian:14 / ruby-oauth2

Package

Name
ruby-oauth2
Purl
pkg:deb/debian/ruby-oauth2?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.0.25-1

Affected versions

2.*
2.0.9-1
2.0.17-1
2.0.18-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54603.json"