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Low, CVSS 3.5

Magnesium-PHP Injection vulnerability

CVE-2017-20187GHSA-8pp6-5qpw-85g3

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (floriangaerber/magnesium 0.3.1), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
3.5 · CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS
  • CVE-2017-20187: 0.69% estimated exploitation activity in the next 30 days; percentile 52.70 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

UNSUPPORTED WHEN ASSIGNED UNSUPPORTED WHEN ASSIGNED A vulnerability was found in Magnesium-PHP up to 0.3.0. It has been classified as problematic. Affected is the function formatEmailString of the file src/Magnesium/Message/Base.php. The manipulation of the argument email/name leads to injection. Upgrading to version 0.3.1 is able to address this issue. The patch is identified as 500d340e1f6421007413cc08a8383475221c2604. It is recommended to upgrade the affected component. VDB-244482 is the identifier assigned to this vulnerability. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-8pp6-5qpw-85g3

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2017-20187

Advisory: Magnesium-PHP Injection vulnerability
IDs: CVE-2017-20187, GHSA-8pp6-5qpw-85g3
Record: https://patchnext.com/advisories/cve-2017-20187 (revision 1, source checked 26 Oct 2026, 14:11 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: floriangaerber/magnesium 0.3.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist floriangaerber/magnesium: affected < 0.3.1; fixed in 0.3.1

## Suggested inspection (read-only)
- Packagist floriangaerber/magnesium: 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 floriangaerber/magnesium.
- 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-8pp6-5qpw-85g3 (GitHub-reviewed advisory GHSA-8pp6-5qpw-85g3 lists affected ranges: Packagist floriangaerber/magnesium >=0 <0.3.1)

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