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CVE-2023-34620

20
FAUCET Score

CVE-2023-34620 is a denial-of-service vulnerability affecting hjson_project hjson up to version 3.0.0, allowing attackers to disrupt service via crafted objects with cyclic dependencies. With a CVSS score of 7.5 (HIGH), it requires no user interaction or privileges and can be exploited over the network. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.0CPE matchmatch criteria
cpe:2.3:a:hjson_project:hjson:*:*:*:*:*:*:*:*

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
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0078 is in the 28th 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

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: laktak/hjsonFixed in: 2.3.0
gopatch availablevia ghsa
Product: github.com/hjson/hjson-go/v4Fixed in: 4.5.0
mavenpatch availablevia ghsa
Product: org.hjson:hjsonFixed in: 3.0.1

Vendor Advisories (1)

mavenGHSA-5wfc-hjrc-gq87high

hjson stack exhaustion vulnerability

Jun 14, 2023

References

github.com / hjson/hjson-java/issues/24
ExploitIssue TrackingThird Party Advisory