Summary
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
GHSA-CRMM-HGP2-WGRP has a CVSS score of 4.2 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (13.12.0, 12.61.1); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
laravel/framework to 13.12.0 or later; laravel/framework to 12.61.1 or later
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is GHSA-CRMM-HGP2-WGRP? GHSA-CRMM-HGP2-WGRP is a medium-severity security vulnerability in laravel/framework (composer), affecting versions >= 13.0.0, < 13.12.0. It is fixed in 13.12.0, 12.61.1.
- How severe is GHSA-CRMM-HGP2-WGRP? GHSA-CRMM-HGP2-WGRP has a CVSS score of 4.2 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of laravel/framework are affected by GHSA-CRMM-HGP2-WGRP? laravel/framework (composer) versions >= 13.0.0, < 13.12.0 is affected.
- Is there a fix for GHSA-CRMM-HGP2-WGRP? Yes. GHSA-CRMM-HGP2-WGRP is fixed in 13.12.0, 12.61.1. Upgrade to this version or later.
- Is GHSA-CRMM-HGP2-WGRP exploitable, and should I be worried? Whether GHSA-CRMM-HGP2-WGRP is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-CRMM-HGP2-WGRP is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-CRMM-HGP2-WGRP?
- Upgrade
laravel/frameworkto 13.12.0 or later - Upgrade
laravel/frameworkto 12.61.1 or later
- Upgrade