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CVE-2023-0163

23
FAUCET Score

CVE-2023-0163 is a Prototype Pollution vulnerability in Mozilla Convict versions prior to 6.2.4, allowing attackers to inject or override object prototype attributes. This can lead to application crashes and potentially compromise server configurations if an administrator is tricked into using malicious JavaScript in config files. Rated 8.4 HIGH on CVSS, the vulnerability has a low attack complexity and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.2.4CPE matchmatch criteria
cpe:2.3:a:mozilla:convict:*:*:*:*:*:node.js:*:*
>= 0, < 6.2.4CPE match
cpe:2.3:a:mozilla:convict:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

8.4HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
19.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 19th percentile among its peer group of 3,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: convictFixed in: 6.2.4
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-4jrm-c32x-w4jfhigh

convict vulnerable to Prototype Pollution

Jan 10, 2023

References

github.com / mozilla/node-convict/issues/410
ExploitIssue Tracking
github.com / mozilla/node-convict/security/advisories/GHSA-4jrm-c32x-w4jf
Vendor Advisory