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Medium, CVSS 4.7

MODX Revolution XSS via HTTP Host header

CVE-2017-9071GHSA-p2j4-vrgx-96qg

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (modx/revolution 2.5.7), 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
4.7 · CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
  • CVE-2017-9071: 0.65% estimated exploitation activity in the next 30 days; percentile 51.13 (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.

In MODX Revolution before 2.5.7, an attacker might be able to trigger XSS by injecting a payload into the HTTP Host header of a request. This is exploitable only in conjunction with other issues such as Cache Poisoning.

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

    Published from ghsa record GHSA-p2j4-vrgx-96qg

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-2017-9071

Advisory: MODX Revolution XSS via HTTP Host header
IDs: CVE-2017-9071, GHSA-p2j4-vrgx-96qg
Record: https://patchnext.com/advisories/cve-2017-9071 (revision 1, source checked 26 Oct 2026, 14:30 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: modx/revolution 2.5.7. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist modx/revolution: affected < 2.5.7; fixed in 2.5.7

## Suggested inspection (read-only)
- Packagist modx/revolution: 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 modx/revolution.
- 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-p2j4-vrgx-96qg (GitHub-reviewed advisory GHSA-p2j4-vrgx-96qg lists affected ranges: Packagist modx/revolution >=0 <2.5.7)

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