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CVE-2021-26083

MEDIUM
5.4
CVSS Score
Published: July 20, 2021 at 03:25 AM UTC
Updated: June 17, 2026 at 03:42 AM UTC
4 products affected across 1 vendorJira ServerJiraJira Data Center

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Export HTML Report in Atlassian Jira Server and Jira Data Center before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Data Center· Atlassianatlassian-app
95%
v < 8.5.14
Affected range stops below 8.5.14, so it looks safe — our inference, not a vendor statement
Jira· Atlassianatlassian-app
95%
v < 8.5.14
Affected range stops below 8.5.14, so it looks safe — our inference, not a vendor statement
Jira Data Center· Atlassianatlassian-app
95%
v ≥ 8.14.0v ≥ 8.6.0v < 8.13.6v < 8.16.1v < 8.5.148.14.0 ≤ v < 8.16.18.6.0 ≤ v < 8.13.68.14.08.6.0
Affected range stops below 8.13.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.16.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.5.14, so it looks safe — our inference, not a vendor statement
Jira Server· Atlassianatlassian-app
95%
v ≥ 8.14.0v ≥ 8.6.0v < 8.13.6v < 8.16.1v < 8.5.148.14.0 ≤ v < 8.16.18.6.0 ≤ v < 8.13.68.14.08.6.0
Affected range stops below 8.13.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.16.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.5.14, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://jira.atlassian.com/browse/JRASERVER-72213

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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