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CVE-2022-37621

30
FAUCET Score

CVE-2022-37621 is a critical prototype pollution vulnerability affecting the browserify-shim project, specifically within the resolveShims function in resolve-shims.js. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without user interaction, allowing for complete compromise of confidentiality, integrity, and availability. Despite its severity, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.8.15CPE matchmatch criteria
cpe:2.3:a:browserify-shim_project:browserify-shim:3.8.15:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 45th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: browserify-shimFixed in: 3.8.16

Vendor Advisories (1)

npmGHSA-r737-347m-wqc7critical

thlorenz browserify-shim vulnerable to prototype pollution

Oct 29, 2022

References

github.com / thlorenz/browserify-shim/blob/464b32bbe142664cd9796059798f6c738ea3de8f/lib/resolve-shims.js
Third Party Advisory
github.com / thlorenz/browserify-shim/blob/464b32bbe142664cd9796059798f6c738ea3de8f/lib/resolve-shims.js
Third Party Advisory
github.com / thlorenz/browserify-shim/issues/247
Issue TrackingThird Party Advisory