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Reflected Cross Site Scripting (XSS) in error messageGHSA-74j9-xhqr-6qv3

GHSA-74j9-xhqr-6qv3 is a security vulnerability in silverstripe/framework. A fix is available for silverstripe/framework — see the affected versions and patch details below.

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Jan 23, 2025 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐘silverstripe/framework

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

If a website has been set to the "dev" environment mode, a URL can be provided which includes an XSS payload which will be executed in the resulting error message.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistsilverstripe/frameworkall versions5.3.8composer require silverstripe/framework:^5.3.8

Detection & mitigation playbook

Open-source dependency
  1. Detect

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

  2. Fix

    Update silverstripe/framework to 5.3.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-74j9-xhqr-6qv3 is resolved across your whole dependency graph.

  3. 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

If a website has been set to the "dev" environment mode, a URL can be provided which includes an XSS payload which will be executed in the resulting error message.
O3 Security · Impact-Aware SCA

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Reflected Cross Site Scripting (XSS) in error message