CVE-2021-26084
Quick assessment
Affected
Atlassian Confluence Server
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Atlassian Confluence Server是澳大利亚Atlassian公司的一套具有企业知识管理功能，并支持用于构建企业WiKi的协同软件的服务器版本。 Atlassian Confluence Server and Data Center 存在注入漏洞，经过身份验证的用户在Confluence 服务器或数据中心实例上执行任意代码。以下产品及版本收到影响：All 4.x.x versions、All 5.x.x versions、All 6.0.x versions、All 6.1.x ver
Public Exploits 3
ExploitDB · 1
EDB-50243 [webapps]
Metasploit · 1
atlassian_confluence_webwork_ognl_injection.rb [exploit]
Nuclei · 1
CVE-2021-26084.yaml [template]
In-the-Wild Activity Observed
cisa_kev · confirmed
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-26084
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Atlassian Confluence Server 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Atlassian Confluence Server是澳大利亚Atlassian公司的一套具有企业知识管理功能，并支持用于构建企业WiKi的协同软件的服务器版本。 Atlassian Confluence Server and Data Center 存在注入漏洞，经过身份验证的用户在Confluence 服务器或数据中心实例上执行任意代码。以下产品及版本收到影响：All 4.x.x versions、All 5.x.x versions、All 6.0.x versions、All 6.1.x ver
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Shenlong Deep Dive — AI Deep Analysis
10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Atlassian | Confluence Server | unspecified ~ 6.13.23 | - |
|
| Atlassian | Confluence Data Center | unspecified ~ 6.13.23 | - |
|
II. Public POCs for CVE-2021-26084
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2021-26084 - Confluence Pre-Auth RCE | OGNL injection | https://github.com/crowsec-edtech/CVE-2021-26084 | POC Details |
| 2 | None | https://github.com/alt3kx/CVE-2021-26084_PoC | POC Details |
| 3 | None | https://github.com/dinhbaouit/CVE-2021-26084 | POC Details |
| 4 | CVE-2021-26084 Remote Code Execution on Confluence Servers, reference: https://github.com/httpvoid/writeups/blob/main/Confluence-RCE.md | https://github.com/JKme/CVE-2021-26084 | POC Details |
| 5 | Confluence Server Webwork OGNL injection | https://github.com/h3v0x/CVE-2021-26084_Confluence | POC Details |
| 6 | Atlassian Confluence Pre-Auth RCE | https://github.com/Udyz/CVE-2021-26084 | POC Details |
| 7 | CVE-2021-26084 - Confluence Pre-Auth RCE OGNL injection 回显 | https://github.com/prettyrecon/CVE-2021-26084_Confluence | POC Details |
| 8 | CVE-2021-26084 Remote Code Execution on Confluence Servers | https://github.com/0xf4n9x/CVE-2021-26084 | POC Details |
| 9 | Remote Code Execution on Confluence Servers : CVE-2021-26084 | https://github.com/Vulnmachines/Confluence_CVE-2021-26084 | POC Details |
| 10 | CVE-2021-26084 Remote Code Execution on Confluence Servers | https://github.com/Osyanina/westone-CVE-2021-26084-scanner | POC Details |
| 11 | 批量检测 | https://github.com/b1gw00d/CVE-2021-26084 | POC Details |
| 12 | CVE-2021-26084 - Confluence Server Webwork OGNL injection (Pre-Auth RCE) | https://github.com/taythebot/CVE-2021-26084 | POC Details |
| 13 | PoC of CVE-2021-26084 written in Golang based on https://twitter.com/jas502n/status/1433044110277890057?s=20 | https://github.com/bcdannyboy/CVE-2021-26084_GoPOC | POC Details |
| 14 | Just run command without brain | https://github.com/smallpiggy/cve-2021-26084-confluence | POC Details |
| 15 | This is exploit | https://github.com/maskerTUI/CVE-2021-26084 | POC Details |
| 16 | This nuclei template is to verify the vulnerability without executing any commands to the target machine | https://github.com/BeRserKerSec/CVE-2021-26084-Nuclei-template | POC Details |
| 17 | CVE-2021-26084 | https://github.com/p0nymc1/CVE-2021-26084 | POC Details |
| 18 | CVE-2021-26084 Confluence OGNL injection | https://github.com/Loneyers/CVE-2021-26084 | POC Details |
| 19 | cve-2021-26084 EXP | https://github.com/Xc1Ym/cve_2021_26084 | POC Details |
| 20 | Setting up POC for CVE-2021-26084 | https://github.com/wolf1892/confluence-rce-poc | POC Details |
| 21 | Confluence server webwork OGNL injection | https://github.com/smadi0x86/CVE-2021-26084 | POC Details |
| 22 | asjhdsajdlksavksapfoka | https://github.com/kkin77/CVE-2021-26084-Confluence-OGNL | POC Details |
| 23 | Atlassian Confluence CVE-2021-26084 one-liner mass checker | https://github.com/1ZRR4H/CVE-2021-26084 | POC Details |
| 24 | A quick and dirty PoC of cve-2021-26084 as none of the existing ones worked for me. | https://github.com/GlennPegden2/cve-2021-26084-confluence | POC Details |
| 25 | Patched Confluence 7.12.2 (CVE-2021-26084) | https://github.com/toowoxx/docker-confluence-patched | POC Details |
| 26 | CVE-2021-26084 patch as provided in "Confluence Security Advisory - 2021-08-25" | https://github.com/nizar0x1f/CVE-2021-26084-patch- | POC Details |
| 27 | Confluence OGNL injection | https://github.com/dorkerdevil/CVE-2021-26084 | POC Details |
| 28 | [CVE-2021-26084] Confluence pre-auth RCE test script | https://github.com/ludy-dev/CVE-2021-26084_PoC | POC Details |
| 29 | None | https://github.com/wdjcy/CVE-2021-26084 | POC Details |
| 30 | CVE-2021-26084 - Confluence Server Webwork OGNL injection | https://github.com/orangmuda/CVE-2021-26084 | POC Details |
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Exploits & Public PoCs for CVE-2021-26084 (1)
Other References for CVE-2021-26084 (1)
-
https://jira.atlassian.com/browse/CONFSERVER-67940 x_refsource_MISC
Same Patch Batch · Atlassian · 2021-08-30 · 4 CVEs total
| CVE-2021-39111 | Atlassian Jira 跨站脚本漏洞 | |
| CVE-2021-39113 | Atlassian Jira 代码问题漏洞 | |
| CVE-2021-39117 | Atlassian Jira 跨站脚本漏洞 |
IV. Related Vulnerabilities
Same product: Confluence Server
V. Comments for CVE-2021-26084
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