CVE-2021-39128: atlassian jira_data_center
Vulnerability summary
CVE-2021-39128 is a high (CVSS 7.2) vulnerability in atlassian jira_data_center. EPSS estimates a 2.57% chance of exploitation in the next 30 days, higher than 85.1% of scored vulnerabilities.
Not severe (CVSS 7.2, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 16-09-2021PublishedVulnerability first disclosed.
- 10-10-2024Last modifiedVulnerability information updated.
Description
Affected versions of Atlassian Jira Server or Data Center using the Jira Service Management addon allow remote attackers with JIRA Administrators access to execute arbitrary Java code via a server-side template injection vulnerability in the Email Template feature. The affected versions of Jira Server or Data Center are before version 8.13.12, and from version 8.14.0 before 8.19.1.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.57%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
Increase +0.68 pp
From 1.89% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-1336Improper Neutralization of Special Elements Used in a Template EngineThe product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.
- CWE-94Improper Control of Generation of CodeThe product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
Affected systems
Known conditions: network-reachable, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Atlassian2 products
- jira_data_center≥ unspecified, < 8.13.12 | ≥ 8.14.0, < unspecified | ≥ unspecified, < 8.19.1 | < 8.13.12 | ≥ 8.14.0, < 8.19.1
- jira_server≥ unspecified, < 8.13.12 | ≥ 8.14.0, < unspecified | ≥ unspecified, < 8.19.1 | < 8.13.12 | ≥ 8.14.0, < 8.19.1
1 vendor · 2 products