CVE-2020-4017Network attack vector

Unauthenticated Jira link metadata disclosure

Published Jun 1, 2020 · Updated Sep 16, 2024

Information disclosure in Atlassian Fisheye and Crucible before 4.8.1 lets remote attackers read configured Jira application links via REST. The /rest/jira-ril/1.0/jira-rest/applinks resource in the crucible-jira-ril plugin returns details about configured Jira application links without requiring authentication. Any network-reachable instance can expose this metadata, while the issue does not indicate write access or service interruption.

CVSS severity5.3
Medium
EPSS probability1.24%
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 Atlassian Fisheye and Crucible before 4.8.1 lets remote attackers read configured Jira application links via REST. The /rest/jira-ril/1.0/jira-rest/applinks resource in the crucible-jira-ril plugin returns details about configured Jira application links without requiring authentication. Any network-reachable instance can expose this metadata, while the issue does not indicate write access or service interruption.

The record

CVE
CVE-2020-4017
Published
Jun 1, 2020
Updated
Sep 16, 2024
Vendor
Atlassian
Product
FishEye
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 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 <4.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Atlassian · FishEyeversion=unspecified <4.8.1
Atlassian · Crucibleversion=unspecified <4.8.1

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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

No sourced classifications are available.

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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