NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
🐘
🐘 Packagist
Not in CISA KEV
HIGH severity

silverstripe/framework BackURL validation bypass with malformed URLsGHSA-m5q3-mvcr-gc5m

HIGHFix: silverstripe/silverstripe-framework@9053014

GHSA-m5q3-mvcr-gc5m is a high-severity (CVSS 7.5) vulnerability in silverstripe/framework. A fix is available for silverstripe/framework — see the affected versions and patch details below.

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

Real-World Exposure

2 pkgs affected
🐘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

A carefully constructed malformed URL can be used to circumvent the offsite redirection protection used on BackURL parameters. This could lead to users entering sensitive data in malicious websites instead of the intended one.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistsilverstripe/framework≥ 4.0.0-rc1&&< 4.0.44.0.4composer require silverstripe/framework:^4.0.4
🐘Packagistsilverstripe/framework≥ 4.1.0-rc1&&< 4.1.14.1.1composer require silverstripe/framework:^4.1.1

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 4.0.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m5q3-mvcr-gc5m 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

A carefully constructed malformed URL can be used to circumvent the offsite redirection protection used on `BackURL` parameters. This could lead to users entering sensitive data in malicious websites instead of the intended one.
O3 Security · Impact-Aware SCA

Is GHSA-m5q3-mvcr-gc5m in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works
silverstripe/framework BackURL validation bypass with…