Command injection in mail agent settings

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2021-37708: 2.36% estimated exploitation activity in the next 30 days; percentile 83.78 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact Command injection in mail agent settings Patches We recommend updating to the current version 6.4.3.1. You can get the update to 6.4.3.1 regularly via the Auto-Updater or directly via the download overview. https://www.shopware.com/en/download/#shopware-6 Workarounds For older versions of 6.1, 6.2, and 6.3, corresponding security measures are also available via a plugin. For the full range of functions, we recommend updating to the latest Shopware version. https://store.shopware.com/en/detail/index/sArticle/518463/number/Swag136939272659

Published by the source

30 Aug 2021, 16:14 UTC

Last modified by the source

29 Jan 2023, 05:06 UTC

Source last checked

26 Oct 2026, 14:00 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-xh55-2fqp-p775

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# Patch Next advisory brief: CVE-2021-37708

Advisory: Command injection in mail agent settings
IDs: CVE-2021-37708, GHSA-xh55-2fqp-p775
Record: https://patchnext.com/advisories/cve-2021-37708 (revision 1, source checked 26 Oct 2026, 14:00 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: shopware/core 6.4.3.1; shopware/platform 6.4.3.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist shopware/core: affected <= 6.4.3.0; fixed in 6.4.3.1
- Packagist shopware/platform: affected <= 6.4.3.0; fixed in 6.4.3.1

## Suggested inspection (read-only)
- Packagist shopware/core: check the installed version with your package manager.
- Packagist shopware/platform: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on shopware/core, shopware/platform.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-xh55-2fqp-p775 (GitHub-reviewed advisory GHSA-xh55-2fqp-p775 lists affected ranges: Packagist shopware/platform >=0 =0 <=6.4.3.0)

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