CVE-2020-4021

lowpriority · track · 22EPSS 0.010 · 63 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.00% (63rd) EPSS

CVSS 3.5 · low

Is it mine?

9 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

Affected versions are: Before 8.5.5, and from 8.6.0 before 8.8.1 of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the XML export view.

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–5.4

v2.03.5lowAV:N/AC:M/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimary

affected products (9)

Products and version ranges known to be affected.

Atlassian Jira Server and Data Center8.6.0 → unspecifiedenisa_euvdEU
Atlassian Jira Server and Data Centerunspecified → 8.5.5enisa_euvdEU
Atlassian Jira Server and Data Centerunspecified → 8.8.1enisa_euvdEU
atlassian jira< 7.13.16nvdUScpe:2.3:a:atlassian:jira:*:*:*:*:*:*:*:*
atlassian jira data center8.0.0 → 8.5.5nvdUScpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*
atlassian jira data center8.6.0 → 8.8.1nvdUScpe:2.3:a:atlassian:jira_data_center:*:*:*:*:*:*:*:*
atlassian jira server8.0.0 → 8.5.5nvdUScpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*
atlassian jira server8.6.0 → 8.8.1nvdUScpe:2.3:a:atlassian:jira_server:*:*:*:*:*:*:*:*
atlassian jira software data center< 7.13.16nvdUScpe:2.3:a:atlassian:jira_software_data_center:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-06-01modified 2026-06-17

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+53061 more

references (4)

External citations — patches, advisories, analysis.

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