Bug 2539219

Summary:	CVE-2026-79780 rclone: rclone: Information disclosure via S3 redirect callbacks [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Yadnyawalk Tale <ytale>
Component:	rclone	Assignee:	Mikel Olasagasti Uranga <mikel>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	go-sig, mikel
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["1e6101fc-3222-4eb8-a94e-1c930582dfd4"]}
Fixed In Version:	rclone-1.75.2-1.fc44 rclone-1.75.2-1.fc45	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-10-21 01:04:06 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:	2523578

Description Yadnyawalk Tale 2026-09-23 08:50:52 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.

rclone before v1.75.0 fails to sanitize IBM IAM bearer tokens and SSE-C encryption keys during S3 redirect callbacks, allowing credentials to be preserved across scheme or host changes. Attackers observing network traffic from a trusted endpoint can capture reusable IBM IAM tokens on same-host HTTPS-to-HTTP downgrades or SSE-C keys on cross-origin redirects to access protected S3 objects.

Comment 1 Fedora Update System 2026-10-11 09:37:41 UTC

FEDORA-2026-7aab7a2bbe (rclone-1.75.2-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-7aab7a2bbe

Comment 2 Fedora Update System 2026-10-13 01:56:43 UTC

FEDORA-2026-7aab7a2bbe 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-2026-7aab7a2bbe`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-7aab7a2bbe

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

Comment 3 Fedora Update System 2026-10-13 02:31:14 UTC

FEDORA-2026-e27d24d18c 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-e27d24d18c`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-e27d24d18c

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

Comment 4 Fedora Update System 2026-10-21 01:04:06 UTC

FEDORA-2026-e27d24d18c (rclone-1.75.2-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 5 Fedora Update System 2026-10-31 18:36:31 UTC

FEDORA-2026-7aab7a2bbe (rclone-1.75.2-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.