CVE-2026-63306

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 v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5
https://www.vulncheck.com/advisories/stoatchat-before-unauthenticated-ssrf-via-proxy-and-embed-endpoints
https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5

Configurations

No configuration.

History

16 Jul 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5 -~~	() https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5 -

16 Jul 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-16 13:16

Updated : 2026-07-16 14:16

NVD link : CVE-2026-63306

Mitre link : CVE-2026-63306

CVE.ORG link : CVE-2026-63306

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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