Bug 2537408

Summary:	CVE-2026-80230 curl: curl: Public key pinning bypass allows unauthenticated connections [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Srikanth Balasubramanian <sbalasub>
Component:	curl	Assignee:	Jan Macku <jamacku>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	jamacku, jmigacz, kdudka, lzaoral, msekleta, paul, vmihalko
Target Milestone:	---	Keywords:	Reopened, Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["c68d41c5-c288-4043-bb2e-06d32d9cb936"]}
Fixed In Version:	curl-8.18.0-14.fc44 curl-8.15.0-12.fc43	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-10-20 05:06:32 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:	2529203

Description Srikanth Balasubramanian 2026-09-21 14:07:54 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 `CURLOPT_PINNEDPUBLICKEY` is configured alongside options that disable
standard peer verification (`CURLOPT_SSL_VERIFYPEER = 0` and
`CURLOPT_SSL_VERIFYHOST = 0`), libcurl fails to enforce public key pinning on
connections established without a presented server certificate. Bypassing the
pinning check under these disabled-verification conditions allows
unauthenticated connections to succeed when they should be rejected.

Comment 1 Fedora Update System 2026-10-09 09:51:11 UTC

FEDORA-2026-b60c369f26 (curl-8.21.0-8.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-b60c369f26

Comment 2 Fedora Update System 2026-10-10 02:22:44 UTC

FEDORA-2026-b60c369f26 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-b60c369f26`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-b60c369f26

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

Comment 3 Fedora Update System 2026-10-12 11:46:12 UTC

FEDORA-2026-a06b828d65 (curl-8.18.0-14.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-a06b828d65

Comment 4 Fedora Update System 2026-10-13 02:33:42 UTC

FEDORA-2026-a06b828d65 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-a06b828d65`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a06b828d65

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

Comment 5 Fedora Update System 2026-10-14 01:26:23 UTC

FEDORA-2026-a06b828d65 (curl-8.18.0-14.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2026-10-15 13:23:28 UTC

FEDORA-2026-d65da12723 (curl-8.15.0-12.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-d65da12723

Comment 7 Fedora Update System 2026-10-16 21:14:36 UTC

FEDORA-2026-d65da12723 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-d65da12723`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-d65da12723

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

Comment 8 Fedora Update System 2026-10-20 05:06:32 UTC

FEDORA-2026-d65da12723 (curl-8.15.0-12.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.