CVE-2021-31684

mediumpriority · track · 31EPSS 0.023 · 83 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.28% (83rd) EPSS

CVSS 5 · medium

Is it mine?

46 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-22

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

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-125USCWE-787USCWE-787US

affected products (46)

Products and version ranges known to be affected.

Atlassian Bamboo < 9.2.7all versionscert_bundDEcpe:/a:atlassian:bamboo:9.2.7
Atlassian Bamboo < 9.3.5all versionscert_bundDEcpe:/a:atlassian:bamboo:9.3.5
Atlassian Bitbucket < 7.21.18all versionscert_bundDEcpe:/a:atlassian:bitbucket:7.21.18
Atlassian Bitbucket < 8.11.6all versionscert_bundDEcpe:/a:atlassian:bitbucket:8.11.6
Atlassian Bitbucket < 8.12.4all versionscert_bundDEcpe:/a:atlassian:bitbucket:8.12.4
Atlassian Bitbucket < 8.13.3all versionscert_bundDEcpe:/a:atlassian:bitbucket:8.13.3
Atlassian Bitbucket < 8.14.2all versionscert_bundDEcpe:/a:atlassian:bitbucket:8.14.2
Atlassian Bitbucket < 8.9.7all versionscert_bundDEcpe:/a:atlassian:bitbucket:8.9.7
Atlassian Confluence < 7.19.17all versionscert_bundDEcpe:/a:atlassian:confluence:7.19.17
Atlassian Confluence < 8.3.4all versionscert_bundDEcpe:/a:atlassian:confluence:8.3.4
Atlassian Confluence < 8.4.5all versionscert_bundDEcpe:/a:atlassian:confluence:8.4.5
Atlassian Confluence < 8.5.4all versionscert_bundDEcpe:/a:atlassian:confluence:8.5.4
Atlassian Confluence < 8.6.2all versionscert_bundDEcpe:/a:atlassian:confluence:8.6.2
Atlassian Confluence < 8.7.1all versionscert_bundDEcpe:/a:atlassian:confluence:8.7.1
Atlassian Jira Software < 9.4.13all versionscert_bundDEcpe:/a:atlassian:jira_software:9.4.13
Atlassian Jira Software Service Management < 4.20.28all versionscert_bundDEcpe:/a:atlassian:jira_software:service_management__4.20.28
Atlassian Jira Software Service Management < 5.4.12all versionscert_bundDEcpe:/a:atlassian:jira_software:service_management__5.4.12
Oracle Fusion Middleware 12.2.1.3.0all versionscert_bundDEcpe:/a:oracle:fusion_middleware:12.2.1.3.0
Oracle Fusion Middleware 12.2.1.4.0all versionscert_bundDEcpe:/a:oracle:fusion_middleware:12.2.1.4.0
Oracle Fusion Middleware 14.1.1.0.0all versionscert_bundDEcpe:/a:oracle:fusion_middleware:14.1.1.0.0

showing 20 of 46

advisories (4)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1016Oracle Fusion Middleware: Mehrere SchwachstellenDeutsch2023-04-18csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Fusion Middleware ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.
WID-SEC-W-2023-2700Atlassian Confluence: Mehrere SchwachstellenDeutsch2023-10-17csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Atlassian Confluence, Atlassian Jira Software, Atlassian Bitbucket und Atlassian Bamboo ausnutzen, um Administratorrechte zu erlangen, Informationen offenzulegen, beliebigen Programmcode auszuführen oder einen Denial of Service Zustand herbeizuführen.
WID-SEC-W-2024-0257IBM QRadar SIEM User Behavior Analytics: Mehrere SchwachstellenDeutsch2024-01-30csaf · cert_bundDE
Ein anonymer Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM User Behavior Analytics ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen, einen Man-in-the-Middle-Angriff durchzuführen oder vertrauliche Informationen offenzulegen.
GHSA-fg2v-w576-w4v3Out of bounds read in json-smart2022-02-10ghsa · osvUS
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.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund osv NVD CVE.org MITRE

published 2021-06-01modified 2026-06-17

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+16026 more

references (30)

External citations — patches, advisories, analysis.

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