{"cve":"CVE-2020-13845","nvd":{"published":"2020-07-14T18:15:14.383","modified":"2026-06-17T02:53:46.017","status":"Modified","description":"Sylabs Singularity 3.0 through 3.5 has Improper Validation of an Integrity Check Value. Image integrity is not validated when an ECL policy is enforced. The fingerprint required by the ECL is compared against the signature object descriptor(s) in the SIF file, rather than to a cryptographically validated signature.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-347","CWE-354"],"references":["http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00046.html","http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html","http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00053.html","https://github.com/hpcng/singularity/security/advisories/GHSA-pmfr-63c2-jr5c","https://medium.com/sylabs"],"products":["sylabs:singularity"],"source":"nvd","synced_at":"2026-10-19T21:06:22.076270124+00:00"},"epss":{"cve":"CVE-2020-13845","score":0.00517,"percentile":0.44011,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-pmfr-63c2-jr5c","url":"https://osv.dev/vulnerability/GHSA-pmfr-63c2-jr5c","summary":"Execution Control List (ECL) Is Insecure in Singularity","modified":"2026-07-08T06:00:17.639787360Z","packages":[{"ecosystem":"Go","name":"github.com/sylabs/singularity","purl":"pkg:golang/github.com/sylabs/singularity","ranges":[">=3.0.0 <3.6.0"],"fixed":["3.6.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}