CVE-2021-47958

Summary

CouchCMS 2.2.1 contains a server-side request forgery vulnerability that allows authenticated attackers to make arbitrary HTTP requests by uploading malicious SVG files. Attackers can upload SVG files containing external entity references through the browse.php endpoint to access internal services and resources.

Affected Software

Weaknesses

• CWE-918: Server-Side Request Forgery (SSRF)

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

• https://www.exploit-db.com/exploits/49675
• https://github.com/CouchCMS/CouchCMS
• https://www.vulncheck.com/advisories/couchcms-server-side-request-forgery-via-svg-upload

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