podman-container-tools podman up to 5.8.3 information disclosure

Summaryinfo

A vulnerability has been found in podman-container-tools podman up to 5.8.3 and classified as problematic. This vulnerability affects unknown code. Performing a manipulation results in information disclosure. This vulnerability was named CVE-2026-57231. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in podman-container-tools podman up to 5.8.3. This affects an unknown part. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

Podman is a tool for managing OCI containers and pods. From 1.8.1 until 5.8.4, a container image that contains a environment variable with just a key and no value can trick podman into passing that variable from the host into the container. This is made worse by the fact that using an asterisk (*) will cause podman to pass all host variables into the container. So essentially a malicious image can exfiltrate all podman environment variables that are set in the session from where the container is launched. This vulnerability is fixed in 5.8.4 and 6.0.0.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-57231 since 06/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 323664 (Linux Distros Unpatched Vulnerability : CVE-2026-57231), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.8.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (323664) and EUVD (EUVD-2026-39807). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Virtualization Software

Vendor

• podman-container-tools

Name

• podman

Version

• 5.8.0
• 5.8.1
• 5.8.2
• 5.8.3

Website

• Product: https://github.com/podman-container-tools/podman/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion