Vulnerability-Lookup

RHSA-2026:13867

Vulnerability from csaf_redhat - Published: 2026-05-05 19:15 - Updated: 2026-05-05 20:28

Summary

Red Hat Security Advisory: rh-podman-desktop security update

Severity

Important

Notes

Topic: An update for rh-podman-desktop is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: Red Hat build of Podman Desktop is a graphical tool for managing containers using Podman. It allows users to run, manage, and configure containers and container images using a desktop GUI. Security Fix(es): * podman-desktop: Podman Desktop: Denial of Service and Information Disclosure via unauthenticated HTTP server (CVE-2026-34045) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-34045

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.

8.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

CWE-770 - Allocation of Resources Without Limits or Throttling

Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:13867

Workaround Restrict network access to the system running Podman Desktop. Configure a firewall to block incoming connections to the ports used by Podman Desktop's unauthenticated HTTP server from untrusted networks. For example, using `firewall-cmd` on Red Hat Enterprise Linux: ```bash sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" port port=<PORT_NUMBER> protocol="tcp" reject' sudo firewall-cmd --reload ``` Replace `<PORT_NUMBER>` with the actual port used by Podman Desktop. This mitigation limits the attack surface and prevents remote exploitation, but may impact the ability to remotely manage or interact with Podman Desktop.

References

URL

Category

	https://access.redhat.com/errata/RHSA-2026:13867	self
	https://access.redhat.com/security/updates/classi…	external
	https://bugzilla.redhat.com/show_bug.cgi?id=2456283	external
	https://issues.redhat.com/browse/RHDESK-399	external
	https://issues.redhat.com/browse/RHEL-160191	external
	https://security.access.redhat.com/data/csaf/v2/a…	self
	https://access.redhat.com/security/cve/CVE-2026-34045	self
	https://bugzilla.redhat.com/show_bug.cgi?id=2456283	external
	https://www.cve.org/CVERecord?id=CVE-2026-34045	external
	https://nvd.nist.gov/vuln/detail/CVE-2026-34045	external
	https://github.com/podman-desktop/podman-desktop/…	external

JSON

To clipboard

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        "title": "Topic"
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      {
        "category": "general",
        "text": "Red Hat build of Podman Desktop is a graphical tool for managing containers using Podman. It allows users to run, manage, and configure containers and container images using a desktop GUI.\n\nSecurity Fix(es):\n\n* podman-desktop: Podman Desktop: Denial of Service and Information Disclosure via unauthenticated HTTP server (CVE-2026-34045)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
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      "cve": "CVE-2026-34045",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-04-07T22:01:34.821793+00:00",
      "ids": [
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      "notes": [
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          "category": "description",
          "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.",
          "title": "Vulnerability description"
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        {
          "category": "summary",
          "text": "podman-desktop: Podman Desktop: Denial of Service and Information Disclosure via unauthenticated HTTP server",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Podman Desktop is vulnerable to denial-of-service and information disclosure. An unauthenticated HTTP server, lacking proper connection limits, allows remote attackers to trigger application crashes or host freezes. Additionally, verbose error responses may expose sensitive internal paths and system details. This affects Red Hat Enterprise Linux versions shipping Podman Desktop. Red Hat Product Security has rated this vulnerability as having the severity of Important as it allows remote unauthenticated users to compromise system availability (A:H), additionally the leak of sensitive path information leakage in error message may allow the attacker to gain knowledge about the environment on which podman-desktop is running.",
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        },
        {
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          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34045"
        },
        {
          "category": "external",
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          "url": "https://github.com/podman-desktop/podman-desktop/security/advisories/GHSA-2q88-39rh-gxvv"
        }
      ],
      "release_date": "2026-04-07T20:52:32.438000+00:00",
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          "category": "vendor_fix",
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            "Extensions-10.1.Z:rh-podman-desktop-0:1.0.1-4.el10_1.src",
            "Extensions-10.1.Z:rh-podman-desktop-0:1.0.1-4.el10_1.x86_64"
          ],
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            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:13867"
        },
        {
          "category": "workaround",
          "details": "Restrict network access to the system running Podman Desktop. Configure a firewall to block incoming connections to the ports used by Podman Desktop\u0027s unauthenticated HTTP server from untrusted networks. For example, using `firewall-cmd` on Red Hat Enterprise Linux:\n\n```bash\nsudo firewall-cmd --permanent --add-rich-rule=\u0027rule family=\"ipv4\" port port=\u003cPORT_NUMBER\u003e protocol=\"tcp\" reject\u0027\nsudo firewall-cmd --reload\n```\n\nReplace `\u003cPORT_NUMBER\u003e` with the actual port used by Podman Desktop. This mitigation limits the attack surface and prevents remote exploitation, but may impact the ability to remotely manage or interact with Podman Desktop.",
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            "Extensions-10.1.Z:rh-podman-desktop-0:1.0.1-4.el10_1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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            "Extensions-10.1.Z:rh-podman-desktop-0:1.0.1-4.el10_1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "podman-desktop: Podman Desktop: Denial of Service and Information Disclosure via unauthenticated HTTP server"
    }
  ]
}

CVE-2026-34045 (GCVE-0-2026-34045)

Vulnerability from cvelistv5 – Published: 2026-04-07 20:52 – Updated: 2026-04-08 15:44

Title

Podman Desktop WebView Server Exposed

Summary

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.

Severity ?

8.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

CWE

CWE-209 - Generation of Error Message Containing Sensitive Information
CWE-400 - Uncontrolled Resource Consumption
CWE-284 - Improper Access Control

Assigner

GitHub_M

References

URL

Tags

https://github.com/podman-desktop/podman-desktop/…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	podman-desktop	podman-desktop	Affected: < 1.26.2

Show details on NVD website

JSON

To clipboard

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                  },
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                "timestamp": "2026-04-08T15:44:06.218575Z",
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              "lang": "en",
              "type": "CWE"
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        },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2026:13867

CVE-2026-34045 (GCVE-0-2026-34045)

Tags

Sightings

Nomenclature