CVE-2021-26084
Summary
| CVE | CVE-2021-26084 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-08-30 07:15:00 UTC |
| Updated | 2023-08-08 14:21:00 UTC |
| Description | In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5. |
Risk And Classification
EPSS: 0.944400000 probability, percentile 0.999890000 (date 2026-04-01)
CISA KEV: Listed on 2021-11-03; due 2021-11-17; ransomware use Known
Problem Types: CWE-917
CISA Known Exploited Vulnerability
| Vendor | Atlassian |
|---|---|
| Product | Confluence Server and Data Center |
| Name | Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability |
| Required Action | Apply updates per vendor instructions. |
| Notes | https://nvd.nist.gov/vuln/detail/CVE-2021-26084 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Atlassian | Confluence | All | All | All | All |
| Application | Atlassian | Confluence Data Center | All | All | All | All |
| Application | Atlassian | Confluence Server | All | All | All | All |
| Application | Atlassian | Data Center | All | All | All | All |
| Application | Atlassian | Jira Data Center | All | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [CONFSERVER-67940] Confluence Server Webwork OGNL injection - CVE-2021-26084 - Create and track feature requests for Atlassian products. | MISC | jira.atlassian.com | |
| Atlassian Confluence WebWork OGNL Injection ≈ Packet Storm | MISC | packetstormsecurity.com | |
| Atlassian Confluence Namespace OGNL Injection ≈ Packet Storm | MISC | packetstormsecurity.com | |
| Confluence Server 7.12.4 OGNL Injection Remote Code Execution ≈ Packet Storm | MISC | packetstormsecurity.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 150368 Atlassian Confluence Server Webwork OGNL Injection RCE Vulnerability (CVE-2021-26084)
- 375839 Confluence Server Webwork Object-Graph Navigation Language (OGNL) Injection Vulnerabilty (CONFSERVER-67940) (Authenticated Check)
- 730172 Confluence Server Webwork OGNL Injection Vulnerabilty (CONFSERVER-67940)