GHSA-crmm-hgp2-wgrp is a medium-severity (CVSS 4.2) vulnerability in laravel/framework. A fix is available for laravel/framework — see the affected versions and patch details below.
Laravel Framework: Temporary Signed URL Path Confusion
Real-World Exposure
laravel/framework🐘laravel/frameworkReal-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 vulnerability in Laravel's local filesystem driver allows temporary signed URLs to be parsed ambiguously, potentially misrouting requests and bypassing expiration enforcement.
Under certain conditions, a generated temporary signed URL can be interpreted differently by the server than intended at signing time. This may cause requests to resolve to an unintended resource, and can prevent expiration from being enforced, allowing expired URLs to remain valid indefinitely.
Impact
- Expired temporary URLs may continue to be accepted
- Requests may resolve to a different resource than the one that was signed
- The upload variant may allow writes to reach an unintended destination
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | laravel/framework | ≥ 13.0.0&&< 13.12.0 | 13.12.0composer require laravel/framework:^13.12.0 |
| 🐘Packagist | laravel/framework | all versions | 12.61.1composer require laravel/framework:^12.61.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for laravel/framework, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update laravel/framework to 13.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-crmm-hgp2-wgrp is resolved across your whole dependency graph.
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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-crmm-hgp2-wgrp can be triaged on real exposure rather than presence alone.
Tailored to GHSA-crmm-hgp2-wgrp. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-crmm-hgp2-wgrp in your dependencies?
O3 Security finds GHSA-crmm-hgp2-wgrp across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.