How severe is GHSA-wgw2-wwq8-c7wf?

GHSA-wgw2-wwq8-c7wf has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by GHSA-wgw2-wwq8-c7wf?

GHSA-wgw2-wwq8-c7wf affects the following packages: Microsoft.ChakraCore (NuGet). Ecosystems affected: NuGet.

How do I fix GHSA-wgw2-wwq8-c7wf?

Update Microsoft.ChakraCore to version 1.10.1 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-wgw2-wwq8-c7wf actively exploited in the wild?

Yes. There are 3 known exploit references for GHSA-wgw2-wwq8-c7wf, 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-wgw2-wwq8-c7wf?

GHSA-wgw2-wwq8-c7wf has an EPSS (Exploit Prediction Scoring System) score of 89.4%, 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-wgw2-wwq8-c7wf in the CISA Known Exploited Vulnerabilities catalog?

Yes. GHSA-wgw2-wwq8-c7wf (ChakraCore Scripting Engine Type Confusion Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-03-03. CISA required all US federal civilian agencies to remediate this vulnerability by 2022-03-17. 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-wgw2-wwq8-c7wf?

GHSA-wgw2-wwq8-c7wf is classified as CWE-843 (CWE-843). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-wgw2-wwq8-c7wf published, and has it been updated?

GHSA-wgw2-wwq8-c7wf was published on May 13, 2022 and was last updated on October 22, 2025. 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 2022-03-03 — agencies required to remediate by 2022-03-17

.NET NuGet

GHSA-wgw2-wwq8-c7wf

HIGH

ChakraCore RCE Vulnerability

Also known asCVE-2018-8298

Published

May 13, 2022

Updated

Oct 22, 2025

Affected

1 pkg

Patched

1 / 1

Exploits

3 known

EPSS Exploitation Probability

via FIRST.org ↗

89.4%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

.NETMicrosoft.ChakraCore

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

Description

A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory, aka "Scripting Engine Memory Corruption Vulnerability." This affects ChakraCore. This CVE ID is unique from CVE-2018-8242, CVE-2018-8283, CVE-2018-8287, CVE-2018-8288, CVE-2018-8291, CVE-2018-8296.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
.NETNuGet	`Microsoft.ChakraCore`	all versions	1.10.1

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-45217doswindows✓ Verified

Microsoft Edge Chakra JIT - InitializeNumberFormat and InitializeDateTimeFormat Type Confusion

by Google Security Research · Aug 17, 2018

Exploit-DB Source

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is GHSA-wgw2-wwq8-c7wf in your stack?

O3 detects GHSA-wgw2-wwq8-c7wf across NuGet 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

7.5/10

CVSS v3 base score

Vector breakdown

AV:Attack Vector

Network

AC:Attack Complexity

High

PR:Privileges Required

None

UI:User Interaction

Required

S:Scope

Unchanged

C:Confidentiality

High

I:Integrity

High

A:Availability

High

Raw vector

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

CWE Classification

CWE-843CWE-843

Weaponization

No known public exploit tooling found.

OpenSSF Scorecard

Package health score

ChakraCore

3.1/10

Code-Review10/10

Maintained0/10

Branch-ProtectionN/A

Assessed Jun 8, 2026

Timeline

First exploit

Aug 17, 2018

KEV added

Mar 3, 2022

Disclosed

May 13, 2022

Last updated

Oct 22, 2025

Identifiers

GHSA-wgw2-wwq8-c7wf

References

Advisorynvd.nist.gov Webgithub.com Webgithub.com Webportal.msrc.microsoft.com Webweb.archive.org Webcisa.gov Webexploit-db.com Packagegithub.com

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