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CVE-2022-42227

25
FAUCET Score

CVE-2022-42227 is a heap-buffer-overflow vulnerability affecting jsonlint 1.0, specifically within the lexer component. This high-severity vulnerability (CVSS 7.5) is remotely exploitable with low attack complexity, requiring no user interaction or privileges, and could lead to a complete loss of availability. While no active exploitation, public exploit code, or significant community discussion has been observed, its EPSS score indicates a higher-than-average likelihood of exploitation compared to many other CVEs.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:jsonlint_project:jsonlint_c\+\+:1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.91%
Probability of exploitation in next 30 days
EPSS Percentile
56.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0091 is in the 31st percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

github.com / p-ranav/jsonlint/issues/2
ExploitThird Party Advisory
github.com / yangfar/CVE/blob/main/CVE-2022-42227.md
ExploitThird Party Advisory