CVE-2020-4018Network attack vector

Setup completion via forged state-changing request

Published Jun 1, 2020 · Updated Sep 16, 2024

Cross-site request forgery in Atlassian FishEye and Crucible before 4.8.1 allows remote attackers to complete application setup. The setup resources accept a forged state-changing request and finish the setup workflow without verifying that the user intended it. Exploitation requires user interaction and a reachable setup workflow; success changes the instance from an unconfigured state using attacker-supplied setup values.

CVSS severity8.8
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Atlassian FishEye and Crucible before 4.8.1 allows remote attackers to complete application setup. The setup resources accept a forged state-changing request and finish the setup workflow without verifying that the user intended it. Exploitation requires user interaction and a reachable setup workflow; success changes the instance from an unconfigured state using attacker-supplied setup values.

The record

CVE
CVE-2020-4018
Published
Jun 1, 2020
Updated
Sep 16, 2024
Vendor
Atlassian
Product
FishEye
Classifications
CWE-352, CAPEC-62, T1190
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

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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-352Cross-Site Request Forgery (CSRF)
CAPEC-62Cross Site Request Forgery
T1190Exploit Public-Facing Application

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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