How severe is GHSA-p66x-2cv9-qq3v?

No CVSS score has been assigned to GHSA-p66x-2cv9-qq3v yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-p66x-2cv9-qq3v?

GHSA-p66x-2cv9-qq3v affects the following packages: commons-beanutils:commons-beanutils (Maven). Ecosystems affected: Maven.

How do I fix GHSA-p66x-2cv9-qq3v?

Update commons-beanutils:commons-beanutils to version 1.9.4 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-p66x-2cv9-qq3v actively exploited in the wild?

Yes. There are 4 known exploit references for GHSA-p66x-2cv9-qq3v, including 1 documented proof-of-concept exploit on Exploit-DB and 2 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-p66x-2cv9-qq3v?

GHSA-p66x-2cv9-qq3v has an EPSS (Exploit Prediction Scoring System) score of 92.3%, 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-p66x-2cv9-qq3v?

GHSA-p66x-2cv9-qq3v is classified as Improper Input Validation (CWE-20). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-p66x-2cv9-qq3v published, and has it been updated?

GHSA-p66x-2cv9-qq3v was published on June 10, 2020 and was last updated on December 1, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

GHSA-p66x-2cv9-qq3v: Arbitrary code execution in Apache Commons…

EPSS Exploitation Probability

via FIRST.org ↗

92.3%probability of exploitation in next 30 days

Very High Risk100th percentile-0.04%

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

☕commons-beanutils:commons-beanutils

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Apache Commons BeanUtils, as distributed in lib/commons-beanutils-1.8.0.jar in Apache Struts 1.x through 1.3.10 and in other products requiring commons-beanutils through 1.9.2, does not suppress the class property, which allows remote attackers to "manipulate" the ClassLoader and execute arbitrary code via the class parameter, as demonstrated by the passing of this parameter to the getClass method of the ActionForm object in Struts 1.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`commons-beanutils:commons-beanutils`	≥ 1.8.0&&< 1.9.4	1.9.4

Frequently Asked Questions

Apache Commons BeanUtils, as distributed in lib/commons-beanutils-1.8.0.jar in Apache Struts 1.x through 1.3.10 and in other products requiring commons-beanutils through 1.9.2, does not suppress the class property, which allows remote attackers to "manipulate" the ClassLoader and execute arbitrary code via the class parameter, as demonstrated by the passing of this parameter to the getClass method of the ActionForm object in Struts 1.

O3 Security · Impact-Aware SCA

Is GHSA-p66x-2cv9-qq3v in your stack?

O3 detects GHSA-p66x-2cv9-qq3v across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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