Bug 2491644

Summary:	CVE-2026-42790 erlang: Erlang OTP public_key: Certificate validation bypass allows hostname spoofing [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Mirco Geremia <mgeremia>
Component:	erlang	Assignee:	Peter Lemenkov <lemenkov>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	jonathan, lemenkov, rhbugs, rjones
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["a0cb3193-741e-4092-9cfc-fff9c1781294"]}
Fixed In Version:	erlang-27.3.4.14-1.fc45	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-07-10 14:53:29 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:

Description Mirco Geremia 2026-06-23 08:07:15 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.

Comment 1 Peter Lemenkov 2026-07-10 14:53:29 UTC

CVE-2026-42790 is addressed across all active Fedora branches:

- rawhide (f45): fixed in erlang-27.3.4.14-1.fc45 (public_key fix present since OTP 27.3.4.12)
- f44 / f43: fixed in erlang-26.2.5.21 (upstream fix landed in OTP 26.2.5.21; both branches have shipped 26.2.5.21-3 as stable since 2026-06-13)

Closing as fixed.