An issue was discovered hjson thru 3.0.0 allows attackers to cause a denial of service or…
Priority HIGH 72CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-787 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00778 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed org.hjson:hjson (Maven): 3.0.1laktak/hjson (Packagist): 2.3.0+1 more product
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | org.hjson:hjson (Maven) | before 3.0.1 | 3.0.1 | Patch available | GHSA-5wfc-hjrc-gq87 |
| — | laktak/hjson (Packagist) | before 2.3.0 | 2.3.0 | Patch available | GHSA-5wfc-hjrc-gq87 |
| — | github.com/hjson/hjson-go/v4 (Go) | before 4.5.0 | 4.5.0 | Patch available | GHSA-5wfc-hjrc-gq87 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- org.hjson:hjson (Maven) Vendor— Affected before 3.0.1 Fixed in 3.0.1 Patch available GHSA-5wfc-hjrc-gq87
- laktak/hjson (Packagist) Vendor— Affected before 2.3.0 Fixed in 2.3.0 Patch available GHSA-5wfc-hjrc-gq87
- github.com/hjson/hjson-go/v4 (Go) Vendor— Affected before 4.5.0 Fixed in 4.5.0 Patch available GHSA-5wfc-hjrc-gq87
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:hjson_project:hjson:*:*:*:*:*:*:*:* | up to 3.0.0 | Vulnerable | Hjson Project |
- cpe:2.3:a:hjson_project:hjson:*:*:*:*:*:*:*:* Versions up to 3.0.0 Vulnerable ·Hjson Project
Remediation
- Fix · GHSA-5wfc-hjrc-gq87 org.hjson:hjson (Maven) Fixed in 3.0.1 Advisory →
- Fix · GHSA-5wfc-hjrc-gq87 laktak/hjson (Packagist) Fixed in 2.3.0 Advisory →
- Fix · GHSA-5wfc-hjrc-gq87 github.com/hjson/hjson-go/v4 (Go) Fixed in 4.5.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-34620
- 2026-10-03 Alias added: GHSA-5wfc-hjrc-gq87
References
Sources
- CVE-2023-34620 · CVE Program
- CVE-2023-34620 · NVD
- FIRST EPSS
- GHSA-5wfc-hjrc-gq87 · GitHub Advisory Database · CC BY 4.0
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