CVE-2023-34620: hjson_project hjson Out-of-bounds Write
CVSS: 7.5v3.1HighModified
AliasesCGA-pf5r-8r33-xjqwGHSA-5wfc-hjrc-gq87GO-2026-5157
Published 14-06-2023Last modified 03-01-2025
Vulnerability summary
CVE-2023-34620 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in hjson_project hjson. EPSS estimates a 0.78% chance of exploitation in the next 30 days, higher than 55.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.78%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 1 · Related 2Timeline
- 14-06-2023PublishedVulnerability first disclosed.
- 03-01-2025Last modifiedVulnerability information updated.
Description
An issue was discovered hjson thru 3.0.0 allows attackers to cause a denial of service or other unspecified impacts via crafted object that uses cyclic dependencies.
CVSS metrics
6 scores · 6 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 6 agree
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · GoEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · MavenEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.78%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
0.00 pp
From 0.78% on 22-09-2026
22-09-202622-10-2026
EPSS score0.78%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundHjson Java
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Chainguard1 product
- jitsucom-bulker-ingest< 2.11.913-r28
Github.com/hjson1 product
- hjson-goAll versions (No fix recorded)
Github.com/hjson/hjson-go1 product
- v4< 4.5.0
Hjson_project1 product
- hjson≤ 3.0.0
Laktak1 product
- hjson< 2.3.0
Org.hjson1 product
- hjson< 3.0.1
Wolfi1 product
- jitsucom-bulker-ingest< 2.11.913-r28
7 vendors · 7 products
