Bug 2546280

Summary: CVE-2026-105221 rubygem-gist: gist: Traffic interception and credential theft via improper TLS certificate validation [fedora-all]
Product: [Fedora] Fedora Reporter: Avinash Hanwate <ahanwate>
Component: rubygem-gistAssignee: Georg Sauthoff <fedora>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: fedora
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["3f68fb5a-76ce-4f0d-8b10-3979171fba49"]}
Fixed In Version: rubygem-gist-6.1.0-1.fc46 rubygem-gist-6.1.0-1.fc45 rubygem-gist-6.1.0-1.fc44 rubygem-gist-6.1.0-1.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-10-26 10:55:17 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2545734    

Description Avinash Hanwate 2026-10-06 05:07:47 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

The gist RubyGem before 6.1.0 contains an improper certificate validation vulnerability that allows on-path attackers to intercept HTTPS traffic because http_connection in lib/gist.rb sets VERIFY_NONE. Attackers can present any certificate to read or modify GitHub API traffic, stealing OAuth tokens and login credentials to read and modify the victim's gists.

Comment 1 Fedora Update System 2026-10-26 10:32:22 UTC
FEDORA-2026-203a947c26 (rubygem-gist-6.1.0-1.fc46) has been submitted as an update to Fedora 46.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-203a947c26

Comment 2 Fedora Update System 2026-10-26 10:55:17 UTC
FEDORA-2026-203a947c26 (rubygem-gist-6.1.0-1.fc46) has been pushed to the Fedora 46 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 3 Fedora Update System 2026-10-26 11:25:01 UTC
FEDORA-2026-26f9e93952 (rubygem-gist-6.1.0-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-26f9e93952

Comment 4 Fedora Update System 2026-10-26 11:25:40 UTC
FEDORA-2026-403284c759 (rubygem-gist-6.1.0-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-403284c759

Comment 5 Fedora Update System 2026-10-26 11:25:50 UTC
FEDORA-2026-46fb337f11 (rubygem-gist-6.1.0-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-46fb337f11

Comment 6 Fedora Update System 2026-10-27 01:57:16 UTC
FEDORA-2026-403284c759 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-403284c759`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-403284c759

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2026-10-27 02:15:23 UTC
FEDORA-2026-26f9e93952 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-26f9e93952`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-26f9e93952

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 8 Fedora Update System 2026-10-27 02:48:58 UTC
FEDORA-2026-46fb337f11 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-46fb337f11`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-46fb337f11

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 9 Fedora Update System 2026-11-04 01:14:48 UTC
FEDORA-2026-26f9e93952 (rubygem-gist-6.1.0-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 10 Fedora Update System 2026-11-04 01:35:43 UTC
FEDORA-2026-403284c759 (rubygem-gist-6.1.0-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 11 Fedora Update System 2026-11-04 01:47:27 UTC
FEDORA-2026-46fb337f11 (rubygem-gist-6.1.0-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.