CVE-2026-63306 Details
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.
A server-side request forgery (SSRF) vulnerability has been identified in Stoatchat versions prior to 0.13.5. The vulnerability exists in the January service's /proxy and /embed endpoints, which accept arbitrary URLs from unauthenticated users without proper validation. This lack of filtering allows attackers to enumerate internal services, fingerprint applications, and access instance metadata endpoints in cloud environments by supplying malicious URLs or exploiting redirect chains to reach internal infrastructure.
Users are advised to update Stoatchat to version 0.13.5 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 16, 2026CISA-ADP
Assessed Jul 16, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5 | CISA-ADP | AdvisoryExploitTechnical AnalysisVendor |
| https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5 | [email protected] | AdvisoryExploitTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/stoatchat-before-unauthenticated-ssrf-via-proxy-and-embed-endpoints | [email protected] | Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| stoatchat | <= 0.13.4 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 16, 2026 | CVE Modified | CISA-ADP |
| Jul 16, 2026 | New CVE Received | [email protected] |