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Go package

github.com/coder/agentapi

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 6.5GoPublished

    Coder AgentAPI exposed user chat history via a DNS rebinding attack

    CVE-2025-59956 · GHSA-w64r-2g3w-w8w4

    Affected
    • Go github.com/coder/agentapi < 0.4.0
    Fixed in
    0.4.0· Vendor fix available
    Issue
    AgentAPI prior to version 0.4.0 was susceptible to a client-side DNS rebinding attack when hosted over plain HTTP on localhost. Impact An attacker could have gained access to the /messages endpoint served by the Agent API. This allowed for the unauthorized exfiltration of sensitive user data, specifically local message history, which could've included secret keys, file system contents, and intellectual property the user was working on locally. Remediation We've implemented an Origin and Host header validating middleware and set a secure by default configuration. Please upgrade to version 0.4.0 or later. Credits We'd like to thank Evan Harris from mcpsec.dev for reporting this issue and following the coordinated disclosure policy.

    Recommended action: Upgrade to 0.4.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →