CVE-2026-63306
highpriority · track · 0EPSS 0.003 · 23 %ileEUEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.7–9.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/stoatchat/stoatchat/releasesPatchcnnvd
- https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5cnnvd
- https://www.vulncheck.com/advisories/stoatchat-before-unauthenticated-ssrf-via-proxy-and-embed-endpointscnnvd
- https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5enisa_euvd
- https://www.vulncheck.com/advisories/stoatchat-before-unauthenticated-ssrf-via-proxy-and-embed-endpointsenisa_euvd
- https://github.com/stoatchat/stoatchat/security/advisories/GHSA-xhww-5g9p-vvq5nvd
- https://www.vulncheck.com/advisories/stoatchat-before-unauthenticated-ssrf-via-proxy-and-embed-endpointsnvd
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