Answer in brief
CVE-2021-31684 records a High severity (CVSS 7.5) vulnerability in Out of bounds read in json-smart. The current sources do not mark it as known exploited. The current feed maps net.minidev:json-smart (maven), net.minidev:json-smart (maven). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps net.minidev:json-smart (maven), net.minidev:json-smart (maven). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| net.minidev:json-smartmaven | >=1.3.0 <1.3.3 | 1.3.3 |
| net.minidev:json-smartmaven | >=2.4.0 <2.4.4 | 2.4.4 |
Published upstream
Feb 10, 2022
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
A vulnerability was discovered in the indexOf function of JSONParserByteArray in JSON Smart versions prior to 1.3.3 and 2.4.5 which causes a denial of service (DOS) via a crafted web request.
Quoted source text, attributed separately from HOL analysis.