CVE-2026-66486

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 2ff9600c9ef32e88759843cdbde74c8db5ae9b30

Database specific

{
    "cna_assigner":  "CERT-PL",
    "cwe_ids":  [
        "CWE-116"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66486.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "last_affected":  "2.15"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandardRange"
                }
            ]
        },
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "last_affected":  "2.15"
                        }
                    ],
                    "source":  "CPE_FIELD",
                    "strategy":  "CPEApplicability"
                }
            ]
        }
    ]
}

References

Affected packages

Git / git.savannah.gnu.org/cgit/cpio.git

Affected ranges

Type

GIT

Repo

https://git.savannah.gnu.org/cgit/cpio.git

Events

Introduced

Fixed

2ff9600c9ef32e88759843cdbde74c8db5ae9b30

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "2ff9600c9ef32e88759843cdbde74c8db5ae9b30"
                }
            ],
            "source":  "DESCRIPTION"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "last_affected":  "2ff9600c9ef32e88759843cdbde74c8db5ae9b30"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66486.json"