What is the CVSS score of CVE-2025-66411?

CVE-2025-66411 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2025-66411?

Yes, a public proof-of-concept exploit is available for CVE-2025-66411. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-66411?

Within 24 hours: Identify all Coder deployments and their current versions; audit access logs for evidence of unauthorized log access. Within 7 days: Upgrade all Coder instances to 2.26.5, 2.27.7, or 2.28.4; rotate any credentials that may have been logged prior to patching. Within 30 days: Review and strengthen access controls on logging systems (SIEM, log aggregators); implement log sanitization policies for sensitive data going forward; document remediation completion.

Coder CVE-2025-66411

Q: Which versions of Coder are affected by CVE-2025-66411?

Coder versions prior to 2.26.5, 2.27.7, and 2.28.4 expose sensitive configuration values in plaintext logs, creating a credential disclosure risk for any user or system with access to workspace agent…. A patch is available.

EUVD-2025-201015 HIGH

Insertion of Sensitive Information into Log File (CWE-532)

2025-12-03 security-advisories@github.com

GHSA-jf75-p25m-pw74

Information Disclosure Kubernetes Coder Suse

7.8

CVSS 3.1 · GitHub Advisory

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Vulnerability Assessment

Weakness	CWE CWE-532 OWASP Top 10:2025 A09:2025 - Security Logging & Alerting Failures ASVS 5.0 V16 - Security Logging and Error Handling Log data sanitization
Impact	Exposed information (credentials, internal paths, user data, configuration) can be leveraged for further attacks or regulatory violations. With a CVSS score of 7.8 (HIGH), this represents a significant risk.
Exploit ScenarioDerived	An attacker triggers error conditions or accesses improperly protected endpoints to extract sensitive internal information from the application.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.0% exploitation probability (EPSS)

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AnalysisGitHub Advisory

Coder allows organizations to provision remote development environments via Terraform. Prior to 2.26.5, 2.27.7, and 2.28.4, Workspace Agent manifests containing sensitive values were logged in plaintext unsanitized. 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 vulnerability is fixed in 2.26.5, 2.27.7, and 2.28.4.

RemediationAI

A vendor patch is available — apply it immediately. Implement proper access controls. Sanitize error messages in production. Review logging practices to avoid capturing sensitive data.

Affected VersionsENISA

coder < 2.26.5

coder 2.28.0, < 2.28.4

coder 2.27.0, < 2.27.7

Affected Packages

go github.com/coder/coder no fix

go github.com/coder/coder/v2 fix: 2.26.5, 2.27.7, 2.28.4

euvd coder fix: 2.26.5, 2.27.7, 2.28.4

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 3 packages in go, euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Information disclosure occurs when an application inadvertently reveals sensitive data to unauthorized actors through error messages, logs, or improper access controls. This vulnerability is classified as Insertion of Sensitive Information into Log File (CWE-532).

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SUSE HIGH

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Mar 15, 2026 - 16:14 nvd

Patch available

PoC Detected

Feb 13, 2026 - 16:09 vuln.today

Public exploit code

CVE Published

Dec 03, 2025 - 20:16 nvd

HIGH 7.8

Executive ViewAI

Why It Matters

Coder versions prior to 2.26.5, 2.27.7, and 2.28.4 expose sensitive configuration values in plaintext logs, creating a credential disclosure risk for any user or system with access to workspace agent logs. Organizations using affected Coder versions risk unauthorized access to development environments and downstream systems if credentials in these logs are discovered by threat actors or malicious insiders.

Business Impact: High

Compensating Controls

Apply vendor patch. If immediate patching is not possible: restrict local access to Coder workspace VMs/pods; implement strict access controls on logging infrastructure and SIEM systems; enable log aggregation with encryption in transit and at rest; disable or isolate Coder deployments until patching is completed; monitor access logs for unauthorized queries.

Threat Intelligence Overview

EPSS Score

0.0%

Top 91% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS Vendor

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.