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CVE-2026-87766GHSA-PXHW-H44J-8PFX

Bubblewrap: bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup

Published
Last modified
published
Not listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the sandboxed process starts. This issue is GHSA-pxhw-h44j-8pfx. It is fixed in bubblewrap 0.12.0.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

  • bubblewrap

    Version range not reported

References 16

access.redhat.com

bugs.debian.org

bugzilla.redhat.com

GitHub · containers/bubblewrap

openwall.com