CVE-2022-39237: Sylabs Singularity Image Format

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

syslabs/sif is the Singularity Image Format (SIF) reference implementation. In versions prior to 2.8.1the `github.com/sylabs/sif/v2/pkg/integrity` package did not verify that the hash algorithm(s) used are cryptographically secure when verifying digital signatures. A patch is available in version >= v2.8.1 of the module. Users are encouraged to upgrade. Users unable to upgrade may independently validate that the hash algorithm(s) used for metadata digest(s) and signature hash are cryptographically secure.

Affected products

• Sylabs Singularity Image Format: before 2.8.1 (fixed in 2.8.1)

Published 2022-10-06. Last modified 2026-06-17.