How severe is GHSA-4w8r-3xrw-v25g?

GHSA-4w8r-3xrw-v25g has a CVSS score of 10/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by GHSA-4w8r-3xrw-v25g?

GHSA-4w8r-3xrw-v25g affects the following packages: craftcms/cms (Packagist). Ecosystems affected: Packagist.

How do I fix GHSA-4w8r-3xrw-v25g?

Update craftcms/cms to version 4.4.15 or later. Run your dependency manager's update command and verify no transitive dependencies pin the vulnerable version. Use O3 Security's SCA scanner to confirm the fix is applied across your entire dependency tree.

Is GHSA-4w8r-3xrw-v25g actively exploited in the wild?

Yes. There are 8 known exploit references for GHSA-4w8r-3xrw-v25g, including 5 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for GHSA-4w8r-3xrw-v25g?

GHSA-4w8r-3xrw-v25g has an EPSS (Exploit Prediction Scoring System) score of 93.8%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is GHSA-4w8r-3xrw-v25g?

GHSA-4w8r-3xrw-v25g is classified as Code Injection (CWE-94). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Is there exploit tooling available for GHSA-4w8r-3xrw-v25g?

A Nuclei detection template exists for GHSA-4w8r-3xrw-v25g, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was GHSA-4w8r-3xrw-v25g published, and has it been updated?

GHSA-4w8r-3xrw-v25g was published on September 13, 2023 and was last updated on February 16, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘 Packagist

GHSA-4w8r-3xrw-v25g

CRITICAL

Craft CMS Remote Code Execution vulnerability

Also known asCVE-2023-41892

Published

Sep 13, 2023

Updated

Feb 16, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

8 known

EPSS Exploitation Probability

via FIRST.org ↗

93.8%probability of exploitation in next 30 days

Very High Risk100th percentile-0.12%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

🐘craftcms/cms

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

Impact

This is a high-impact, low-complexity attack vector. Users running Craft installations before 4.4.15 are encouraged to update to at least that version to mitigate the issue.

Mitigations

This has been fixed in Craft 4.4.15. You should ensure you’re running at least that version.
Refresh your security key in case it has already been captured. You can do that by running the php craft setup/security-key command and copying the updated CRAFT_SECURITY_KEY environment variable to all production environments.
If you have any other private keys stored as environment variables (e.g., S3 or Stripe), refresh those as well.
Out of an abundance of caution, you may want to force all your users to reset their passwords in case your database was compromised. You can do that by running php craft resave/users --set passwordResetRequired --to "fn() => true".

References

https://github.com/craftcms/cms/commit/c0a37e15cc925c473e60e27fe64054993b867ac1#diff-47dd43d86f85161944dfcce2e41d31955c4184672d9bd9d82b948c6b01b86476

https://github.com/craftcms/cms/commit/7359d18d46389ffac86c2af1e0cd59e37c298857

https://github.com/craftcms/cms/commit/a270b928f3d34ad3bd953b81c304424edd57355e

https://github.com/craftcms/cms/blob/develop/CHANGELOG.md#4415---2023-07-03-critical

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`craftcms/cms`	≥ 4.0.0-RC1&&< 4.4.15	4.4.15

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.