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TI-2021-09343 Aliases CVE-2021-28099GHSA-9295-mhf3-v33m

In Netflix OSS Hollow, since the Files.exists(parent) is run before creating the…

Priority LOW 20CWE-330Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

In Netflix OSS Hollow, since the Files.exists(parent) is run before creating the directories, an attacker can pre-create these directories with wide permissions. Additionally, since an insecure source of randomness is used, the file names to be created can be deterministically calculated.

Why it matters now

EPSS 0.00251 16th percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Netflix OSS HollowAll versions—No fix listedCNA
—com.netflix.hollow:hollow (Maven)up to 6.1.0—No fix listedGHSA-9295-mhf3-v33m
  • Netflix OSS Hollow Vendor— Affected All versions Fixed in — No fix listed CNA
  • com.netflix.hollow:hollow (Maven) Vendor— Affected up to 6.1.0 Fixed in — No fix listed GHSA-9295-mhf3-v33m

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:netflix:hollow:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetflix
  • cpe:2.3:a:netflix:hollow:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Netflix

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28099
  2. 2026-10-03 Alias added: GHSA-9295-mhf3-v33m

References

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences