How severe is GHSA-cr3x-7m39-c6jq?

GHSA-cr3x-7m39-c6jq has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by GHSA-cr3x-7m39-c6jq?

GHSA-cr3x-7m39-c6jq affects the following packages: actionview (RubyGems). Ecosystems affected: RubyGems.

How do I fix GHSA-cr3x-7m39-c6jq?

Update actionview to version 4.2.11.3 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-cr3x-7m39-c6jq actively exploited in the wild?

Yes. There are 6 known exploit references for GHSA-cr3x-7m39-c6jq, including 1 documented proof-of-concept exploit on Exploit-DB and 3 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-cr3x-7m39-c6jq?

GHSA-cr3x-7m39-c6jq has an EPSS (Exploit Prediction Scoring System) score of 91.1%, 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-cr3x-7m39-c6jq?

GHSA-cr3x-7m39-c6jq 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-cr3x-7m39-c6jq?

A Nuclei detection template exists for GHSA-cr3x-7m39-c6jq, 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-cr3x-7m39-c6jq published, and has it been updated?

GHSA-cr3x-7m39-c6jq was published on July 7, 2020 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.

💎 RubyGems

GHSA-cr3x-7m39-c6jq

HIGH

Remote code execution via user-provided local names in ActionView

Also known asBIT-rails-2020-8163CVE-2020-8163

Published

Jul 7, 2020

Updated

Feb 16, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

6 known

EPSS Exploitation Probability

via FIRST.org ↗

91.1%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

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

💎actionview

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

Description

The is a code injection vulnerability in versions of Rails prior to 5.0.1 that would allow an attacker who controlled the locals argument of a render call to perform a RCE.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
💎RubyGems	`actionview`	all versions	4.2.11.3

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.

EDB-48716webappsruby

Rails 5.0.1 - Remote Code Execution

by Lucas Amorim · Jul 26, 2020

Exploit-DB Source

Frequently Asked Questions

The is a code injection vulnerability in versions of Rails prior to 5.0.1 that would allow an attacker who controlled the `locals` argument of a `render` call to perform a RCE.

O3 Security · Impact-Aware SCA

Is GHSA-cr3x-7m39-c6jq in your stack?

O3 detects GHSA-cr3x-7m39-c6jq across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works

CVSS Score

8.8/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

Low

UI:User Interaction

None

S:Scope

Unchanged

C:Confidentiality

High

I:Integrity

High

A:Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE Classification

Weaponization

OpenSSF Scorecard

Package health score

ruby-advisory-db

7.0/10

Maintained10/10

Code-Review10/10

Branch-ProtectionN/A

Assessed Jun 1, 2026

Timeline

Disclosed

Jul 7, 2020

First exploit

Jul 26, 2020

Last updated

Feb 16, 2024

Identifiers

GHSA-cr3x-7m39-c6jq

BIT-rails-2020-8163

References

Advisorynvd.nist.gov Webhackerone.com Webgithub.com Webgroups.google.com Webgroups.google.com Weblists.debian.org Webpacketstormsecurity.com

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