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CVE-2026-109380

8.7 high SSVC exploitation: none Deferred
NVD · CVE.org

modern-tar 0.3.5 through 0.8.5 contains a memory exhaustion vulnerability that allows attackers to produce negative entry sizes via non-octal bytes parsed by readOctal(). Attackers can supply a crafted, optionally gzip-compressed, archive to unpackTar() that buffers chunks indefinitely, exhausting process memory and suppressing later entries.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 2

  1. StatusReceived → DeferredNVD modified 2026-10-16 19:18
  2. First seenCVSS 8.7NVD modified 2026-10-13 16:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 5