CVE-2021-43942
MediumAffected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a Reflected Cross-Site Scripting (XSS) vulnerability in the /rest/collectors/1.0/template/custom endpoint.
Published Jan 4, 2022 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2021-43942 is a medium-severity vulnerability (CVSS 6.1 v3.1) affecting Jira Server (Atlassian), Jira Server And Data Center (Atlassian), Jira Data Center.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 55% probability of exploitation in the next 30 days.
- Fixed versions are available, including Jira Server 8.20.3, Jira Server 8.13.15, Jira Server unspecified.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
55%
Higher than 99.0% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2021-43942 brief as a PDF
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Description
Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a Reflected Cross-Site Scripting (XSS) vulnerability in the /rest/collectors/1.0/template/custom endpoint. To exploit this issue, the attacker must trick a user into visiting a malicious website. The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Jira ServerAtlassian | >= unspecified | 8.20.3 |
| Jira Server And Data CenterAtlassian | See advisory | 8.13.5 |
| Jira Data Center | >= unspecified | 8.13.15 |
Patched Releases
Jira Server
8.20.3, 8.13.15, unspecified
Jira Server And Data Center
8.13.5
Jira Data Center
8.13.15, 8.20.3, unspecified
Timeline
Publicly disclosed
Jan 4, 2022
Last updated
Nov 21, 2024
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
FAQ
Common Questions.
Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a Reflected Cross-Site Scripting (XSS) vulnerability in the /rest/collectors/1.0/template/custom endpoint.
Affected: Jira Server (Atlassian) versions >= unspecified; Jira Server And Data Center (Atlassian); Jira Data Center versions >= unspecified. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Jira Server 8.20.3, Jira Server 8.13.15, Jira Server unspecified.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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