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CVE-2026-63133

cisagov/Malcolm · Severity Medium (CVSS 6.5) · Discovered by Pavan Nallamothu

A roughly 50 KB archive containing 50,000 empty directory entries created 50,000 inodes in about 2.2 seconds, an amplification of one inode per compressed byte. A depth-axis variant produced many inodes from a single entry, exhausting filesystem inodes.

Summary

Inode-exhaustion denial of service in archive extraction.

References

cve.org record · GitHub Security Advisory GHSA-c35g-mgc3-95rx