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Microsoft Security Response CenterCVE-2026-53655

node-tar applies PAX size override to intermediary GNU long-name/long-link headers, causing tar parser interpretation differential (file smuggling)

MediumVendor CVSS 5.5 / 10 1 CVE Published Jun 28, 2026 at 1:04 AM UTC

Summary

Mariner

Products covered

  • azl3 tar 1.35-2 on Azure Linux 3.0

Remediation

Separate remediation guidance was not included in the collected bulletin.

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.