CVE-2021-43949Network attack vector

Authenticated private-object disclosure via Custom Fields

Published Jan 10, 2022 · Updated Oct 4, 2024

Broken access control in Custom Fields in Atlassian Jira Service Management before 4.21.0 allows remote authenticated users to view private objects. Atlassian has not disclosed which Custom Fields request or authorization check improperly permits access to objects marked private. Exploitation requires an authenticated account and exposes private object data without reported modification or service interruption.

CVSS severity4.3
Medium
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in Custom Fields in Atlassian Jira Service Management before 4.21.0 allows remote authenticated users to view private objects. Atlassian has not disclosed which Custom Fields request or authorization check improperly permits access to objects marked private. Exploitation requires an authenticated account and exposes private object data without reported modification or service interruption.

The record

CVE
CVE-2021-43949
Published
Jan 10, 2022
Updated
Oct 4, 2024
Vendor
Atlassian
Product
Jira Service Management Server
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <4.21.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Atlassian · Jira Service Management Serverversion=unspecified <4.21.0
Atlassian · Jira Service Management Data Centerversion=unspecified <4.21.0

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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