Bug 2456283 (CVE-2026-34045)

Summary:	CVE-2026-34045 podman-desktop: Podman Desktop: Denial of Service and Information Disclosure via unauthenticated HTTP server
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	odockal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in Podman Desktop. A remote attacker can exploit an unauthenticated HTTP server, which lacks proper connection limits and timeouts, to trigger denial-of-service (DoS) conditions. This can lead to application crashes or a complete host freeze. Additionally, verbose error responses from the server may disclose sensitive information, such as internal file paths and system details, including usernames on Windows systems.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-04-07 22:01:57 UTC

Podman Desktop is a graphical tool for developing on containers and Kubernetes. Prior to 1.26.2, an unauthenticated HTTP server exposed by Podman Desktop allows any network attacker to remotely trigger denial-of-service conditions and extract sensitive information. By abusing missing connection limits and timeouts, an attacker can exhaust file descriptors and kernel memory, leading to application crash or full host freeze. Additionally, verbose error responses disclose internal paths and system details (including usernames on Windows), aiding further exploitation. The issue requires no authentication or user interaction and is exploitable over the network. This vulnerability is fixed in 1.26.2.

Comment 1 odockal 2026-04-10 08:51:40 UTC

At this point, we already have a RPM build ready also with RHSA errata: https://errata.devel.redhat.com/advisory/details/165101, where we have a fix for this CVE. We need to dispatch this bug into appropriate state so we can ship the RPM. The cve was also patched upstream: https://github.com/podman-desktop/podman-desktop/security/advisories/GHSA-2q88-39rh-gxvv.

Comment 3 errata-xmlrpc 2026-05-05 19:14:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:13867 https://access.redhat.com/errata/RHSA-2026:13867