CVE-2021-26068

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-02-22 · updated 2026-06-17
Weakness: CWE-74

Description

An endpoint in Atlassian Jira Server for Slack plugin from version 0.0.3 before version 2.0.15 allows remote attackers to execute arbitrary code via a template injection vulnerability.

Affected products

Atlassian Jira Server for Slack: from 0.0.3 before 2.0.15 — fixed in 2.0.15

How to fix

Upgrade to a fixed version: Atlassian Jira Server for Slack 2.0.15. Check the vendor advisory for mitigations.

References

https://confluence.atlassian.com/jira/jira-server-for-slack-security-advisory-17th-february-2021-1044091690.html
https://confluence.atlassian.com/jira/jira-server-for-slack-security-advisory-17th-february-2021-1044091690.html

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