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Vulnerabilities CVE-2026-65057

CVE-2026-65057

Critical
Open
TLP:CLEAR

Keep Unauthenticated Server-Side Request Forgery via POST /providers/healthcheck

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Description

Keep (commit 91c75e0) contains a server-side request forgery vulnerability that allows unauthenticated attackers to make the backend issue arbitrary HTTP requests by supplying attacker-controlled host values to the unprotected healthcheck endpoint. Attackers can send a crafted JSON payload with a malicious host parameter to cause the backend to issue outbound requests to internal services or cloud metadata endpoints, enabling theft of cloud credentials and internal network reconnaissance.

Details

CVSS Score
9.2
EPSS Score
0.25%

15.9th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
Confidence
90%
Published
Jul 21, 2026
Last Modified
Jul 28, 2026
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