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Medium, CVSS 5.9

ZendFramework Potential Proxy Injection Vulnerabilities

GHSA-mg7h-9qfx-4r83

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (zendframework/zendframework 2.0.5), 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
5.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

Zend\Session\Validator\RemoteAddr and Zend\View\Helper\ServerUrl were found to be improperly parsing HTTP headers for proxy information, which could potentially allow an attacker to spoof a proxied IP or host name. In Zend\Session\Validator\RemoteAddr, if the client is behind a proxy server, the detection of the proxy URL was incorrect, and could lead to invalid results on subsequent lookups. In Zend\View\Helper\ServerUrl, if the server lives behind a proxy, the helper would always generate a URL based on the proxy host, regardless of whether or not this was desired; additionally, it did not take into account the proxy port or protocol, if provided.

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

    Published from ghsa record GHSA-mg7h-9qfx-4r83

Agent brief

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

# Patch Next advisory brief: GHSA-mg7h-9qfx-4r83

Advisory: ZendFramework Potential Proxy Injection Vulnerabilities
IDs: GHSA-mg7h-9qfx-4r83
Record: https://patchnext.com/advisories/ghsa-mg7h-9qfx-4r83 (revision 1, source checked 26 Oct 2026, 14:25 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: zendframework/zendframework 2.0.5. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist zendframework/zendframework: affected >= 2.0.0, < 2.0.5; fixed in 2.0.5

## Suggested inspection (read-only)
- Packagist zendframework/zendframework: 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 zendframework/zendframework.
- 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-mg7h-9qfx-4r83 (GitHub-reviewed advisory GHSA-mg7h-9qfx-4r83 lists affected ranges: Packagist zendframework/zendframework >=2.0.0 <2.0.5)

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