How severe is GHSA-c2gp-86p4-5935?

GHSA-c2gp-86p4-5935 has a CVSS score of 6.5/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-c2gp-86p4-5935?

GHSA-c2gp-86p4-5935 affects the following packages: puppeteer (npm). Ecosystems affected: npm.

How do I fix GHSA-c2gp-86p4-5935?

Update puppeteer to version 1.13.0 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-c2gp-86p4-5935 actively exploited in the wild?

Yes. There are 8 known exploit references for GHSA-c2gp-86p4-5935, including 1 documented proof-of-concept exploit on Exploit-DB and 6 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-c2gp-86p4-5935?

GHSA-c2gp-86p4-5935 has an EPSS (Exploit Prediction Scoring System) score of 89.9%, 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.

Is GHSA-c2gp-86p4-5935 in the CISA Known Exploited Vulnerabilities catalog?

Yes. GHSA-c2gp-86p4-5935 (Google Chrome Blink Use-After-Free Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-05-23. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-06-13. The required action was: Apply updates per vendor instructions. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is GHSA-c2gp-86p4-5935?

GHSA-c2gp-86p4-5935 is classified as Use After Free (CWE-416). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-c2gp-86p4-5935 published, and has it been updated?

GHSA-c2gp-86p4-5935 was published on September 2, 2020 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-05-23 — agencies required to remediate by 2022-06-13

📦 npm

GHSA-c2gp-86p4-5935

MEDIUM

Use-After-Free in puppeteer

Also known asCVE-2019-5786

Published

Sep 2, 2020

Updated

Nov 8, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

8 known

EPSS Exploitation Probability

via FIRST.org ↗

89.9%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

📦puppeteer

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

Description

Versions of puppeteer prior to 1.13.0 are vulnerable to the Use-After-Free vulnerability in Chromium (CVE-2019-5786). The Chromium FileReader API is vulnerable to Use-After-Free which may lead to Remote Code Execution.

Recommendation

Upgrade to version 1.13.0 or later.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`puppeteer`	all versions	1.13.0

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-46812remotewindows_x86✓ Verified

Google Chrome 72.0.3626.119 - 'FileReader' Use-After-Free (Metasploit)

by Metasploit · May 8, 2019

Exploit-DB Source

Frequently Asked Questions

Versions of `puppeteer` prior to 1.13.0 are vulnerable to the Use-After-Free vulnerability in Chromium (CVE-2019-5786). The Chromium FileReader API is vulnerable to Use-After-Free which may lead to Remote Code Execution. ## Recommendation Upgrade to version 1.13.0 or later.

O3 Security · Impact-Aware SCA

Is GHSA-c2gp-86p4-5935 in your stack?

O3 detects GHSA-c2gp-86p4-5935 across npm 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

6.5/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

Low

PR:Privileges Required

None

UI:User Interaction

Required

S:Scope

Unchanged

C:Confidentiality

None

I:Integrity

None

A:Availability

High

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE Classification

CWE-416Use After Free

Weaponization

No known public exploit tooling found.

OpenSSF Scorecard

Package health score

puppeteer

8.7/10

Maintained10/10

Code-Review9/10

Branch-ProtectionN/A

Assessed Jun 8, 2026

Timeline

First exploit

May 8, 2019

Disclosed

Sep 2, 2020

KEV added

May 23, 2022

Last updated

Nov 8, 2023

Identifiers

GHSA-c2gp-86p4-5935

References

Advisorynvd.nist.gov Webgithub.com Webblog.exodusintel.com Webchromereleases.googleblog.com Webcrbug.com Websnyk.io Webnpmjs.com Packagegithub.com

Data from OSV.dev, enriched by O3 Security. Refreshed hourly.