Vulnerability Description
stoatchat before 0.13.5 contains an unauthenticated server-side request forgery vulnerability in the /proxy and /embed endpoints that accept arbitrary URLs without DNS resolution filtering or private IP range validation. Attackers can enumerate internal services, fingerprint applications, and reach instance metadata endpoints by supplying malicious URLs or leveraging redirect chains to access internal infrastructure.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5
- https://www.vulncheck.com/advisories/stoatchat-before-unauthenticated-ssrf-via-p
- https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5
FAQ
What is CVE-2026-63306?
CVE-2026-63306 is a vulnerability with a CVSS score of 8.6 (HIGH). stoatchat before 0.13.5 contains an unauthenticated server-side request forgery vulnerability in the /proxy and /embed endpoints that accept arbitrary URLs without DNS resolution filtering or private ...
How severe is CVE-2026-63306?
CVE-2026-63306 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-63306?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.