CVE-2026-55828: qbee-io transport, обхождане на път

Описание

Оригинално описание

qbee transport is a remote access transport protocol implementation. Prior to 1.26.25, the extractTar routine uses strictly lexical path validation that does not account for on-disk symlinks created earlier in the extraction process. A crafted tar archive can use a symlink chain to write or overwrite files one directory level above the intended extraction path. When qbee-agent performs the extraction with root privileges, this permits a root-privileged file write outside the intended destination. This issue is fixed in version 1.26.25.

Засегнати продукти

• qbee-io transport: < 1.26.25

Вид слабост

• CWE-22 Неправилно ограничаване на път до позволена директория
• CWE-59 Неправилно разрешаване на връзка преди достъп до файл

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-55828
• https://nvd.nist.gov/vuln/detail/CVE-2026-55828
• https://github.com/qbee-io/transport/security/advisories/GHSA-f9m7-vc86-p6jj
• https://github.com/qbee-io/transport/pull/19
• https://github.com/qbee-io/transport/commit/43947671ba9be8fb08b105f3539a112ee7a57ddc