Bug 2497474

Summary:	CVE-2026-8927 davix: libcurl: Information disclosure due to uncleared proxy authentication state [epel-all]
Product:	[Fedora] Fedora EPEL	Reporter:	Jon Moroney <jmoroney>
Component:	davix	Assignee:	Mihai Patrascoiu <mihai.patrascoiu>
Status:	ASSIGNED ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	epel10	CC:	adev88, mattias.ellert, mihai.patrascoiu
Target Milestone:	---	Keywords:	Reopened, Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["8769b971-d276-4ed3-a339-1de08db3ef46"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-09-07 06:03:31 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:	2496769

Description Jon Moroney 2026-07-06 20:18:47 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.

When reusing a libcurl handle for sequential transfers driven by
environment-variable proxy configuration, libcurl fails to clear the proxy
authentication state between requests. Specifically, if the initial transfer
authenticates against `proxyA` using Digest auth, a subsequent transfer routed
through `proxyB` erroneously leaks the `Proxy-Authorization:` header intended
solely for `proxyA`.

Comment 1 Mihai Patrascoiu 2026-07-15 14:30:02 UTC

Hello,

This CVE affects Davix on EPEL8 platform, as over there we bundle libcurl v7.69.0.

Can patch our Davix codebase once upstream patch backport is published for curl v7.69.0.

Cheers,
Mihai