CVE-2025-66411 is a high-severity security vulnerability in github.com/coder/coder/v2 (go), affecting versions < 2.26.5. It is fixed in 2.26.5, 2.27.7, 2.28.4.
Summary Workspace Agent manifests containing sensitive values were logged in plaintext unsanitized Details By default Workspace Agent logs are redirected to stderr https://github.com/coder/coder/blob/a8862be546f347c59201e2219d917e28121c0edb/cli/agent.go#L432-L439 Workspace Agent Manifests containing sensitive environment variables were logged insecurely https://github.com/coder/coder/blob/7beb95fd56d2f790502e236b64906f8eefb969bd/agent/agent.go#L1090 An attacker with limited local access to the Coder Workspace (VM, K8s Pod etc.) or a third-party system (SIEM, logging stack) could access those logs This behavior opened room for unauthorized access and privilege escalation Impact Impact varies depending on the environment variables set in a given workspace Patches Fix was released & backported: https://github.com/coder/coder/releases/tag/v2.28.4 https://github.com/coder/coder/releases/tag/v2.27.7 https://github.com/coder/coder/releases/tag/v2.26.5 Workarounds One potential workaround is to disable Workspace Agent Logs by setting following configuration option CODERAGENTLOGGINGHUMAN=/dev/null platform operators are advised to upgrade their deployments
CVE-2025-66411 has a CVSS score of 7.8 (High). The vector is requires local access, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.
A fixed version is available (2.26.5, 2.27.7, 2.28.4). Upgrading removes the vulnerable code path.
go
github.com/coder/coder/v2 (< 2.26.5)github.com/coder/coder/v2 (>= 2.27.0, < 2.27.7)github.com/coder/coder/v2 (>= 2.28.0, < 2.28.4)github.com/coder/coder/v2 → 2.26.5 (go)github.com/coder/coder/v2 → 2.27.7 (go)github.com/coder/coder/v2 → 2.28.4 (go)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter instead of chasing every advisory.
Kodem's runtime-powered SCA identifies whether CVE-2025-66411 is reachable in your applications. Explore open-source security for your team.
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Already deployed Kodem? See CVE-2025-66411 in your environment →Upgrade the following packages to resolve this vulnerability:
github.com/coder/coder/v2 to 2.26.5 or latergithub.com/coder/coder/v2 to 2.27.7 or latergithub.com/coder/coder/v2 to 2.28.4 or laterKodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
CVE-2025-66411 is a high-severity security vulnerability in github.com/coder/coder/v2 (go), affecting versions < 2.26.5. It is fixed in 2.26.5, 2.27.7, 2.28.4.
CVE-2025-66411 has a CVSS score of 7.8 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
github.com/coder/coder/v2 (go) versions < 2.26.5 is affected.
Yes. CVE-2025-66411 is fixed in 2.26.5, 2.27.7, 2.28.4. Upgrade to this version or later.
Whether CVE-2025-66411 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
github.com/coder/coder/v2 to 2.26.5 or latergithub.com/coder/coder/v2 to 2.27.7 or latergithub.com/coder/coder/v2 to 2.28.4 or later