CVE-2021-41306Network attack vector

Anonymous private-name disclosure via gadget IDOR

Published Oct 26, 2021 · Updated Oct 9, 2024

IDOR in Atlassian Jira Server and Data Center allows remote attackers to view private project and filter names through the Average Time in Status Gadget. The gadget resolves attacker-controlled object references and returns their names without enforcing the referenced objects’ visibility permissions. No account is required; exposure is limited to private project and filter names, with no reported access to their contents or modification capability.

CVSS severity7.5
High
EPSS probability1.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IDOR in Atlassian Jira Server and Data Center allows remote attackers to view private project and filter names through the Average Time in Status Gadget. The gadget resolves attacker-controlled object references and returns their names without enforcing the referenced objects’ visibility permissions. No account is required; exposure is limited to private project and filter names, with no reported access to their contents or modification capability.

The record

CVE
CVE-2021-41306
Published
Oct 26, 2021
Updated
Oct 9, 2024
Vendor
Atlassian
Product
Jira Server
Classifications
CWE-639, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 26, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 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=0 <8.13.12
  2. Affected versionversion=8.14.0 <8.20.0
  3. Affected versionversion=8.14.0 <unspecified
  4. Affected versionversion=unspecified <8.13.12
  5. Affected versionversion=unspecified <8.20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Atlassian · Jira Serverversion=0 <8.13.12; version=8.14.0 <8.20.0; version=8.14.0 <unspecified; version=unspecified <8.13.12; version=unspecified <8.20.0
Atlassian · Jira Data Centerversion=0 <8.13.12; version=8.14.0 <8.20.0; version=8.14.0 <unspecified; version=unspecified <8.13.12; version=unspecified <8.20.0

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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