CVE-2025-59956 describes a client-side DNS rebinding vulnerability in AgentAPI versions 0.3.3 and below, affecting integrations like Claude Code, Goose, and Gemini when hosted over plain HTTP on localhost. This medium-severity vulnerability (CVSS 6.5) allows an unauthenticated attacker to exploit user interaction to access the /messages endpoint, leading to high confidentiality impact through the unauthorized exfiltration of sensitive local message history, including secret keys and file system contents. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.4.0CPE matchmatch criteria | cpe:2.3:a:coder:agentapi:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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