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GNU cpio is vulnerable to improper encoding or escaping of output in its archive member listing functionality. When listing archive members via cpio -it, member names are printed directly to output w…

Info
CVECVE-2026-66486
First seen2026-08-10 12:15 UTC
Disclosed2026-08-10 11:17 UTC
Last updated2026-08-10 12:15 UTC
Channel statusauto

Summary

GNU cpio is vulnerable to improper encoding or escaping of output in its archive member listing functionality. When listing archive members via cpio -it, member names are printed directly to output without quoting or escaping. An attacker can craft a cpio archive containing member names with embedded newline characters or ANSI escape sequences, causing forged listing entries or terminal control sequence injection when the listing is displayed. This issue has been fixed in commit 2ff9600c9ef…

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Lint boundary warnings (2)

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://cert.pl/en/posts/2026/08/CVE-2026-66484
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://git.savannah.gnu.org/cgit/cpio.git

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD