🛡️ CVE-2026-55828 — transport

⚪ Unknown ✅ No Known Exploit CWE-22 OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

go.qbee.io/transport: Symlink-chain path traversal in tar extraction (one level outside destination)

Impact

The go.qbee.io/transport library is affected by a symlink-chain path traversal vulnerability in its extractTar routine. The library's path validation is strictly lexical and fails to account for on-disk symlinks created earlier in the extraction process. Consequently, a crafted tar archive can be used to write or overwrite files one directory level above the intended extraction path. In the case of qbee-agent, which runs with root privileges, this vulnerability permits a root-privileged file write outside the intended destination.

Patches

The issue has been addressed in version v1.26.25

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity high, availability low.

Weakness class

CVE-2026-55828 is classified as CWE-22: Path Traversal. A file path built from user input is not confined to the intended directory, letting an attacker reach files elsewhere on the filesystem.

Affected software

CVE-2026-55828 is recorded against 1 package.

go.qbee.io/transport

Timeline and source

Published on 19 June 2026 and last revised on 25 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Package)

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

CWE CWE-22

Public Exploit ✅ No

Source OSV

Published 2026-06-19

Updated 2026-08-12

Modified 2026-06-25

Fix URL N/A

Affected Packages

Software	From version	Fixed in
go.qbee.io/transport	—	—

References

WEB https://github.com/qbee-io/transport/security/advisories/GHSA-f9m7-vc86-p6jj

PACKAGE https://github.com/qbee-io/transport

🔗 NVD 🔗 Mitre

More CVE 2026 advisories

Browse all of CVE 2026 in the advisory index.

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