CVE-2025-59956

MEDIUM
2025-09-30 [email protected]
6.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 28, 2026 - 19:15 vuln.today
Patch Released
Mar 28, 2026 - 19:15 nvd
Patch available
PoC Detected
Oct 08, 2025 - 15:05 vuln.today
Public exploit code
CVE Published
Sep 30, 2025 - 11:37 nvd
MEDIUM 6.5

Tags

Information Disclosure Agentapi Suse

Description

AgentAPI is an HTTP API for Claude Code, Goose, Aider, Gemini, Amp, and Codex. Versions 0.3.3 and below are susceptible to a client-side DNS rebinding attack when hosted over plain HTTP on localhost. An attacker can gain access to the /messages endpoint served by the Agent API. This allows for the unauthorized exfiltration of sensitive user data, specifically local message history, which can include secret keys, file system contents, and intellectual property the user was working on locally. This issue is fixed in version 0.4.0.

Analysis

AgentAPI is an HTTP API for Claude Code, Goose, Aider, Gemini, Amp, and Codex. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical Context

This vulnerability is classified under CWE-350. AgentAPI is an HTTP API for Claude Code, Goose, Aider, Gemini, Amp, and Codex. Versions 0.3.3 and below are susceptible to a client-side DNS rebinding attack when hosted over plain HTTP on localhost. An attacker can gain access to the /messages endpoint served by the Agent API. This allows for the unauthorized exfiltration of sensitive user data, specifically local message history, which can include secret keys, file system contents, and intellectual property the user was working on locally. This issue is fixed in version 0.4.0. Affected products include: Coder Agentapi. Version information: version 0.4.0..

Affected Products

Coder Agentapi.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Priority Score

53
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +32
POC: +20

Vendor Status

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CVE-2025-59956 vulnerability details – vuln.today
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