CVE-2021-26086
Last modified
CVE-2021-26086 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Affected versions of Atlassian Jira Server and Data Center allow remote attackers to read particular files via a path traversal vulnerability in the /WEB-INF/web.xml endpoint. The affected versions are before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1.. CISA has confirmed active exploitation in the wild. EPSS estimates a 100.00% chance of exploitation in the next 30 days.
Description
Affected versions of Atlassian Jira Server and Data Center allow remote attackers to read particular files via a path traversal vulnerability in the /WEB-INF/web.xml endpoint. The affected versions are before version 8.5.14, from version 8.6.0 before 8.13.6, and from version 8.14.0 before 8.16.1.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
100.0th percentile
Probability of exploitation in the next 30 days. Learn more
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Atlassian | Jira Data Center | < 8.5.14 |
| Atlassian | Jira Data Center | >= 8.6.0, < 8.13.6 |
| Atlassian | Jira Data Center | >= 8.14.0, < 8.16.1 |
| Atlassian | Jira Server | < 8.5.14 |
| Atlassian | Jira Server | >= 8.6.0, < 8.13.6 |
| Atlassian | Jira Server | >= 8.14.0, < 8.16.1 |
References
- http://packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.htmlExploit, Third Party Advisory, VDB Entry
- https://jira.atlassian.com/browse/JRASERVER-72695Issue Tracking, Vendor Advisory
- http://packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.htmlExploit, Third Party Advisory, VDB Entry
- https://jira.atlassian.com/browse/JRASERVER-72695Issue Tracking, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26086US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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