Bug 2526423

Summary:	CVE-2026-9079 rustup: libcurl: Information disclosure due to failure to clear proxy authentication credentials [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Avinash Hanwate <ahanwate>
Component:	rustup	Assignee:	Rust SIG <rust-sig>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	decathorpe, rust-sig, suraj.ghimire7
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["3fcbefd7-a8a3-4faa-a00f-21ca8eb7fdbf"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-09-01 15:57:04 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:	2496771

Description Avinash Hanwate 2026-08-31 17:49:33 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.

libcurl had a flaw that when instructed to clear proxy authentication
credentials which made it not do so, leaving the old credentials around to get
used for subsequent transfers that should not know nor use them.

Comment 1 Fabio Valentini 2026-09-01 15:57:04 UTC

rustup only dynamically links libcurl, and does not include curl itself.
This bug needs to be fixed in the "curl" package and nothing can be done here.