SEPTEMBER 17, 2026
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Case File

CVE-2026-55828

MEDIUM · CVSS 6 EPSS 0.37% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The qbee transport protocol prior to version 1.26.25 is vulnerable to a directory traversal attack due to inadequate path validation in the extractTar routine, allowing crafted tar archives to exploit symlink chains. This can lead to unauthorized file writes or overwrites in directories above the intended extraction path, particularly when the qbee-agent operates with root privileges. Organizations using affected versions should prioritize upgrading to version 1.26.25 to mitigate the risk of potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-55828
Severity
MEDIUM
CVSS
6
EPSS
0.37%

Original NVD Description

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.