GHSA-GXXJ-G9V8-W28P

The Drupal project uses the PEAR Archive_Tar library. The PEAR Archive_Tar library has released a security update that impacts Drupal. For more information please see:
CVE-2020-28948
CVE-2020-28949

Multiple vulnerabilities are possible if Drupal is configured to allow .tar, .tar.gz, .bz2, or .tlz file uploads and processes them.

To mitigate this issue, prevent untrusted users from uploading .tar, .tar.gz, .bz2, or .tlz files.

Untrusted input is evaluated as executable code within the application's runtime environment. Typical impact: arbitrary code execution within the application's privilege context.

GHSA-GXXJ-G9V8-W28P has a CVSS score of 7.8 (High). The vector is requires local access, no privileges required, and user interaction required. 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 (7.75, 8.8.12, 8.9.10, 9.0.9); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is GHSA-GXXJ-G9V8-W28P? GHSA-GXXJ-G9V8-W28P is a high-severity code injection vulnerability in drupal/core (composer), affecting versions >= 7.0.0, < 7.75. It is fixed in 7.75, 8.8.12, 8.9.10, 9.0.9. Untrusted input is evaluated as executable code within the application's runtime environment.
2. How severe is GHSA-GXXJ-G9V8-W28P? GHSA-GXXJ-G9V8-W28P has a CVSS score of 7.8 (High). 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.
3. Which versions of drupal/core are affected by GHSA-GXXJ-G9V8-W28P? drupal/core (composer) versions >= 7.0.0, < 7.75 is affected.
4. Is there a fix for GHSA-GXXJ-G9V8-W28P? Yes. GHSA-GXXJ-G9V8-W28P is fixed in 7.75, 8.8.12, 8.9.10, 9.0.9. Upgrade to this version or later.
5. Is GHSA-GXXJ-G9V8-W28P exploitable, and should I be worried? Whether GHSA-GXXJ-G9V8-W28P 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
6. What actually determines whether GHSA-GXXJ-G9V8-W28P 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.
7. How do I fix GHSA-GXXJ-G9V8-W28P?
   • Upgrade drupal/core to 7.75 or later
   • Upgrade drupal/core to 8.8.12 or later
   • Upgrade drupal/core to 8.9.10 or later
   • Upgrade drupal/core to 9.0.9 or later