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MEDIUM severity

silverstripe/framework has Cross-site Scripting vulnerability in CMSSecurity BackURLGHSA-r85g-7jpv-8xrx

MEDIUMFix: silverstripe/silverstripe-framework@6b123fe

GHSA-r85g-7jpv-8xrx is a medium-severity (CVSS 6.1) vulnerability in silverstripe/framework. A fix is available for silverstripe/framework — see the affected versions and patch details below.

Published
Updated
Affected
4 pkgs
Patched
4 / 4
Exploits
None indexed
Exploitation data as of Dec 2, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

4 pkgs affected
🐘silverstripe/framework🐘silverstripe/framework🐘silverstripe/framework🐘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

In follow up to SS-2016-001 there is yet a minor unresolved fix to incorrectly encoded URL.

Affected Packages

4 total 4 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistsilverstripe/framework≥ 3.1.0-rc1&&< 3.1.213.1.21composer require silverstripe/framework:^3.1.21
🐘Packagistsilverstripe/framework≥ 3.2.0-rc1&&< 3.2.63.2.6composer require silverstripe/framework:^3.2.6
🐘Packagistsilverstripe/framework≥ 3.3.0-rc1&&< 3.3.43.3.4composer require silverstripe/framework:^3.3.4
🐘Packagistsilverstripe/framework≥ 3.4.0-rc1&&< 3.4.23.4.2composer require silverstripe/framework:^3.4.2

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 3.1.21 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r85g-7jpv-8xrx is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

In follow up to [SS-2016-001](https://www.silverstripe.org/download/security-releases/ss-2016-001/) there is yet a minor unresolved fix to incorrectly encoded URL.
O3 Security · Impact-Aware SCA

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silverstripe/framework has Cross-site Scripting…