CVE-2020-36289Network attack vector

Unauthenticated user enumeration via query component endpoint

Published May 12, 2021 · Updated Oct 17, 2024

Information disclosure in affected Atlassian Jira Server and Data Center releases allows remote attackers to enumerate valid users. The QueryComponentRendererValue!Default.jspa endpoint exposes user-query results without correctly enforcing authorization. No account or user interaction is required; the bounded impact is disclosure of valid user identities for account discovery.

CVSS severity5.3
Medium
EPSS probability99.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in affected Atlassian Jira Server and Data Center releases allows remote attackers to enumerate valid users. The QueryComponentRendererValue!Default.jspa endpoint exposes user-query results without correctly enforcing authorization. No account or user interaction is required; the bounded impact is disclosure of valid user identities for account discovery.

The record

CVE
CVE-2020-36289
Published
May 12, 2021
Updated
Oct 17, 2024
Vendor
Atlassian
Product
Jira Server
Classifications
CWE-863, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <8.5.15
  2. Affected versionversion=8.14.0 <8.17.0
  3. Affected versionversion=8.14.0 <unspecified
  4. Affected versionversion=8.6.0 <8.13.7
  5. Affected versionversion=8.6.0 <unspecified
  6. Affected versionversion=unspecified <8.13.5
  7. Affected versionversion=unspecified <8.15.1
  8. Affected versionversion=unspecified <8.5.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Atlassian · Jira Serverversion=0 <8.5.15; version=8.14.0 <8.17.0; version=8.14.0 <unspecified; version=8.6.0 <8.13.7; version=8.6.0 <unspecified; version=unspecified <8.13.5; version=unspecified <8.15.1; version=unspecified <8.5.13
Atlassian · Jira Data Centerversion=0 <8.5.15; version=8.14.0 <8.17.0; version=8.14.0 <unspecified; version=8.6.0 <8.13.7; version=8.6.0 <unspecified; version=unspecified <8.13.5; version=unspecified <8.15.1; version=unspecified <8.5.13

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/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 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-863Incorrect Authorization
T1087Account Discovery

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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