CVE-2021-31684: json-smart_project json-smart-v1 Out-of-bounds Write
Vulnerability summary
CVE-2021-31684 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in json-smart_project json-smart-v1. EPSS estimates a 2.28% chance of exploitation in the next 30 days, higher than 83.1% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 5Timeline
- 01-06-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A vulnerability was discovered in the indexOf function of JSONParserByteArray in JSON Smart versions 1.3 and 2.4 which causes a denial of service (DOS) via a crafted web request.
CVSS metrics
7 scores · 6 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem 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
EPSS trend
Probability
2.28%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.28% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundJson Smart V2
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard11 products
- celeborn-0.5< 0.5.4-r26
- celeborn-0.6< 0.6.3-r7
- druid< 37.0.0-r56 | < 37.0.0-r14 | < 34.0.0-r6
- hadoop-client-modules< 3.3.6-r7
- spark-3.5-scala-2.12All versions (No fix recorded) | < 3.5.9-r10
Wolfi7 products
- celeborn-0.6< 0.6.3-r7
- druid< 37.0.0-r56 | < 37.0.0-r14 | < 34.0.0-r6
- thingsboard< 3.7-r4
- thingsboard-tb-js-executor< 3.7-r4
- thingsboard-tb-mqtt-transport< 3.7-r4
Json-smart_project2 products
- json-smart-v1≥ 1.3, < 1.3.3
- json-smart-v2≥ 2.4, < 2.4.4
Debian1 product
- json-smart< 2.2-2+deb12u1 | < 2.5.1-1
Net.minidev1 product
- json-smart≥ 1.3.0, < 1.3.3 | ≥ 2.4.0, < 2.4.4
Oracle1 product
- utilities_framework4.4.0.0.0 | 4.4.0.2.0 | 4.4.0.3.0
Ubuntu1 product
- json-smart< 2.2-2ubuntu0.18.04.1 | < 2.2-2ubuntu0.20.04.1 | < 2.2-2ubuntu0.22.04.1
7 vendors · 24 products
