CVE-2025-6624 is a vulnerability affecting versions of the Snyk CLI package prior to 1.1297.3. The issue involves the inadvertent insertion of sensitive information into local debug log files when the CLI is run in DEBUG or TRACE log levels. Specifically, container registry credentials (username and password) provided via environment variables (SNYK_REGISTRY_USERNAME, SNYK_REGISTRY_PASSWORD) or command line arguments (--username/-u, --password/-p) can be exposed in the debug logs when executing commands such as 'snyk container test' or 'snyk container monitor'. Additionally, when the 'snyk auth' command is run with debug mode enabled and log level set to TRACE, the Snyk access and refresh tokens used for authenticating the CLI to the Snyk service may be logged. Similarly, executing 'snyk iac test' with a Remote IAC Custom rules bundle under the same debug and TRACE logging conditions can cause the docker registry token to be written into local debug logs. This vulnerability arises from overly verbose logging in debug modes that capture sensitive credentials in plaintext within local log files. The vulnerability requires local access to the machine running the Snyk CLI and debug mode enabled at a high verbosity level (TRACE) to be exploitable. The CVSS 4.0 score is 2.4 (low severity), reflecting the limited attack vector (local), high attack complexity, and requirement for privileges and user interaction. No known exploits are reported in the wild. The vulnerability primarily risks confidentiality by exposing sensitive credentials that could be used to access container registries or Snyk services if the debug logs are accessed by unauthorized parties. Integrity and availability impacts are not evident. The issue is mitigated by upgrading to Snyk CLI version 1.1297.3 or later, which presumably removes sensitive data from debug logs. Users should also avoid running the CLI in debug or TRACE mode in production or sensitive environments, and ensure local debug logs are properly secured and rotated to prevent unauthorized access.

For European organizations, the exposure of container registry credentials and Snyk authentication tokens in local debug logs could lead to unauthorized access to container images and development pipelines if an attacker gains access to the affected host. This could result in the theft or tampering of container images, potentially introducing malicious code into production environments. The impact is particularly relevant for organizations heavily reliant on containerized applications and DevSecOps workflows using Snyk for security scanning and infrastructure-as-code testing. While the vulnerability requires local access and debug mode enabled, insider threats or attackers who have compromised developer or CI/CD workstations could exploit this to escalate access. The confidentiality breach could undermine trust in supply chain security and lead to compliance issues under regulations such as GDPR if sensitive information is leaked. However, the overall risk is mitigated by the low severity and the need for specific conditions (debug mode, local access). Organizations with stringent access controls and secure handling of debug logs will face reduced risk. Nonetheless, given the widespread use of Snyk in European software development and container ecosystems, the vulnerability warrants attention to prevent credential leakage and potential lateral movement within networks.

1. Upgrade the Snyk CLI to version 1.1297.3 or later immediately to ensure the vulnerability is patched. 2. Avoid enabling DEBUG or TRACE logging levels in production or sensitive environments, especially when running commands that interact with container registries or authentication tokens. 3. Implement strict access controls on developer and CI/CD workstations to limit who can enable debug logging and access local log files. 4. Secure and regularly rotate local debug log files, ensuring they are stored with appropriate file system permissions and encrypted if possible. 5. Use ephemeral or short-lived credentials for container registries and Snyk authentication tokens to minimize exposure if leaked. 6. Audit existing debug logs for sensitive information and securely delete any logs containing credentials. 7. Educate developers and DevOps teams about the risks of enabling verbose logging and handling of sensitive environment variables and CLI arguments. 8. Consider integrating secrets management solutions to avoid passing credentials via environment variables or CLI arguments where feasible. 9. Monitor for unusual access patterns to container registries and Snyk services that could indicate credential misuse. These steps go beyond generic advice by focusing on operational practices around debug logging and credential handling specific to this vulnerability.