CVE-2019-20402Network attack vector

Support archive disclosure via missing password reauthentication

Published Feb 6, 2020 · Updated Sep 16, 2024

Improper authorization in Jira Server before 8.6.0 allows remote authenticated users with System Administrator access to download support ZIP files. The support-file download path does not enforce Jira's WebSudo password reauthentication, but Atlassian has not disclosed the responsible handler or authorization check. Exploitation requires System Administrator permission and exposes logs, diagnostic data, and configuration data contained in a generated support archive.

CVSS severity4.9
Medium
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Jira Server before 8.6.0 allows remote authenticated users with System Administrator access to download support ZIP files. The support-file download path does not enforce Jira's WebSudo password reauthentication, but Atlassian has not disclosed the responsible handler or authorization check. Exploitation requires System Administrator permission and exposes logs, diagnostic data, and configuration data contained in a generated support archive.

The record

CVE
CVE-2019-20402
Published
Feb 6, 2020
Updated
Sep 16, 2024
Vendor
Atlassian
Product
Jira Server
Classifications
T1005
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 6, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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 <8.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Atlassian · Jira Serverversion=unspecified <8.6.0

Published CVSS scores

4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1005Data from Local System

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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