CVE-2020-4023Network attack vector

Cross-site scripting via unsanitized committerFilter parameter

Published Jun 1, 2020 · Updated Sep 17, 2024

Cross-site scripting in Atlassian FishEye and Crucible before 4.8.2 allows remote attackers to inject HTML or JavaScript through committerFilter. The review coverage resource incorporates committerFilter content into rendered output without neutralizing executable markup. Exploitation requires a victim to load the crafted response, allowing script execution in the application's browser origin and access to browser-visible data.

CVSS severity5.4
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

Cross-site scripting in Atlassian FishEye and Crucible before 4.8.2 allows remote attackers to inject HTML or JavaScript through committerFilter. The review coverage resource incorporates committerFilter content into rendered output without neutralizing executable markup. Exploitation requires a victim to load the crafted response, allowing script execution in the application's browser origin and access to browser-visible data.

The record

CVE
CVE-2020-4023
Published
Jun 1, 2020
Updated
Sep 17, 2024
Vendor
Atlassian
Product
FishEye
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 <4.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Atlassian · FishEyeversion=unspecified <4.8.2
Atlassian · Crucibleversion=unspecified <4.8.2

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/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 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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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