# CVE-2026-9595: rh-podman-desktop: Impact: When a user-configured proxy on webpack-dev-server has a broad context (e.g

CVE-2026-9595 is fixed in rh-podman-desktop on 1 platform by RHSA-2026:57590 (version 1.1.2-1.el10_2), released August 21, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-9595
- Priority: High
- CVSS: 7.1 (important)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 15, 2026

## Description

Impact: When a user-configured proxy on webpack-dev-server has a broad context (e.g. /) and ws: true, it also intercepts the dev server's own HMR WebSocket and forwards it to the proxy target. This leaks the browser's cookies and Origin header to the backend, bypasses the dev server's Host/Origin validation, and corrupts the HMR socket (both HMR and the proxy end up writing to the same socket). Patches: Fixed in webpack-dev-server@5.2.5. Workarounds: Scope user-defined proxy context to specific paths instead of /, or omit ws: true from the proxy entry when WebSocket forwarding is not required.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | rh-podman-desktop RHEL 10 | 1.1.2-1.el10_2 | [RHSA-2026:57590](https://patchblox.com/security/data/fix/linux/rhsa-2026-57590.md) | Aug 21, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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