How severe is GHSA-5gmf-3c43-q73v?

GHSA-5gmf-3c43-q73v has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-5gmf-3c43-q73v?

GHSA-5gmf-3c43-q73v affects the following packages: zendframework/zendframework (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-5gmf-3c43-q73v?

Update zendframework/zendframework to 2.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5gmf-3c43-q73v is resolved across your whole dependency graph.

How do I detect GHSA-5gmf-3c43-q73v in my Packagist dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for zendframework/zendframework, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-5gmf-3c43-q73v if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is GHSA-5gmf-3c43-q73v actively exploited in the wild?

No public exploit code has been indexed for GHSA-5gmf-3c43-q73v yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-5gmf-3c43-q73v published, and has it been updated?

GHSA-5gmf-3c43-q73v was published on June 7, 2024 and was last updated on December 4, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

MEDIUM severity

ZendFramework vulnerable to Cross-site ScriptingGHSA-5gmf-3c43-q73v

MEDIUMFix: zendframework/zendframework@07d847b

GHSA-5gmf-3c43-q73v is a medium-severity (CVSS 6.1) vulnerability in zendframework/zendframework. A fix is available for zendframework/zendframework — see the affected versions and patch details below.

Published

Jun 7, 2024

Updated

Dec 4, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Dec 4, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

🐘zendframework/zendframework

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Zend\Debug, Zend\Feed\PubSubHubbub, Zend\Log\Formatter\Xml, Zend\Tag\Cloud\Decorator, Zend\Uri, Zend\View\Helper\HeadStyle, Zend\View\Helper\Navigation\Sitemap, and Zend\View\Helper\Placeholder\Container\AbstractStandalone were not using Zend\Escaper when escaping HTML, HTML attributes, and/or URLs. While most were performing some escaping, because they were not using context-appropriate escaping mechanisms, they could potentially be exploited to perform Cross Site Scripting (XSS) attacks.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`zendframework/zendframework`	≥ 2.0.0&&< 2.0.1	2.0.1`composer require zendframework/zendframework:^2.0.1`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for zendframework/zendframework, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update zendframework/zendframework to 2.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5gmf-3c43-q73v is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

`Zend\Debug`, `Zend\Feed\PubSubHubbub`, `Zend\Log\Formatter\Xml`, `Zend\Tag\Cloud\Decorator`, `Zend\Uri`, `Zend\View\Helper\HeadStyle, Zend\View\Helper\Navigation\Sitemap`, and `Zend\View\Helper\Placeholder\Container\AbstractStandalone` were not using `Zend\Escaper` when escaping HTML, HTML attributes, and/or URLs. While most were performing some escaping, because they were not using context-appropriate escaping mechanisms, they could potentially be exploited to perform Cross Site Scripting (XSS) attacks.

O3 Security · Impact-Aware SCA

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