CVE-2026-47215 sylabs CVE debrief

Who should care

Container administrators and users of SingularityCE and SingularityPRO should assess their exposure and update to fixed versions. This includes reviewing container path configurations, verifying current deployments, and ensuring that security updates are applied. Security teams and vulnerability management teams should also review the vulnerability and assess the potential impact on their organizations.

Why it matters

CVE-2026-47215 allows a container to be run from outside the administrator's configured path allowlist. Container administrators should verify their configurations and update to fixed versions to prevent potential unauthorized container execution.

• Verify container path configurations to prevent unauthorized container execution
• Update to fixed versions to address the vulnerability
• Review deployment configurations for potential exposure

Technical summary

The vulnerability occurs due to incorrect path-string matching in the singularity.conf file, allowing a container to be run from outside the administrator's configured path allowlist. This issue is fixed in SingularityCE 4.4.2 and SingularityPRO 4.3.9 and 4.1.14. The incorrect path-string matching permits a user to execute a container from a sibling directory, potentially bypassing security restrictions. To address this vulnerability, administrators should update to the fixed versions and review their container configurations.

Defensive priority

Container administrators should verify their configurations and update to fixed versions.

Recommended defensive actions

• Verify and restrict container paths in singularity.conf
• Update to SingularityCE 4.4.2 or later, or SingularityPRO 4.3.9 or 4.1.14
• Review container deployment configurations for potential exposure
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, the scope of affected versions and deployments requires further verification. Affected SingularityCE and SingularityPRO versions allow a container to be run from outside the administrator's configured path allowlist due to incorrect path-string matching in the singularity.conf file. To verify exposure, defenders should review container path configurations, specifically the limit container paths directive, and assess their current deployments against fixed Sing

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.