CVE-2026-63306
HIGHstoatchat before 0.13.5 Unauthenticated SSRF via proxy and embed endpoints
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-xhww-5g9p-vvq5)
https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5
Third Party Advisory third-party-advisory
VulnCheck Advisory: stoatchat before 0.13.5 Unauthenticated SSRF via proxy and embed endpoints
https://www.vulncheck.com/advisories/stoatchat-before-unauthenticated-ssrf-via-proxy-and-embed-endpoints
Scores
CVSS v3
8.6
EPSS
0.0024
EPSS Percentile
15.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (2)
stoatchat/stoatchat
< 0.13.5
stoatchat/stoatchat
0.13.5
Published
Jul 16, 2026
Tracked Since
Jul 16, 2026