# Podman: Malformed Image can trick podman run into leaking host environment variables into the container

Advisory record · `GHSA-4hq8-gpf5-8p68`

- **Identifiers:** `GHSA-4hq8-gpf5-8p68` · `CVE-2026-57231` · `GO-2026-6594`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **Weakness (CWE):** [CWE-200](https://cwe.mitre.org/data/definitions/200.html) · [CWE-668](https://cwe.mitre.org/data/definitions/668.html)
- **Tags:** [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md)
- **Published:** 24 Sept 2026
- **Updated:** 1 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 24 Sept 2026, 19:40 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/containers/podman/v5` (Go): affected `<5.8.4`; fixed in `5.8.4`
- `go.podman.io/podman/v6` (Go): affected `<6.0.0`; fixed in `6.0.0`
- `github.com/containers/podman/v4` (Go): affected `<=4.9.5`; no fixed version yet
- `github.com/containers/podman/v3` (Go): affected `<=3.4.7`; no fixed version yet
- `github.com/containers/podman/v2` (Go): affected `<=2.2.1`; no fixed version yet
- `github.com/containers/podman` (Go): affected `>=1.8.1`; no fixed version yet

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0044, the 38th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:12 UTC: First seen by agentprime
- 31 Oct 2026, 14:12 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-4hq8-gpf5-8p68)

## Sources

- [GitHub Advisory Database: GHSA-4hq8-gpf5-8p68](https://github.com/advisories/GHSA-4hq8-gpf5-8p68)
- [OSV: GHSA-4hq8-gpf5-8p68](https://osv.dev/vulnerability/GHSA-4hq8-gpf5-8p68)
- <https://github.com/podman-container-tools/podman/security/advisories/GHSA-4hq8-gpf5-8p68>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-57231>
- <https://github.com/podman-container-tools/podman/commit/6c431b73dbf8e4b20b778644d7a80caebdb75050>
- <https://github.com/podman-container-tools/podman>
- <https://github.com/podman-container-tools/podman/releases/tag/v5.8.4>
- <https://github.com/podman-container-tools/podman/releases/tag/v6.0.0>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-4hq8-gpf5-8p68>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-4hq8-gpf5-8p68/>. Everything for agents: <https://agentprime.io/llms.txt>.