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CVE-2026-1386

MEDIUM

6.0

Description

A UNIX symbolic link following issue in the jailer component in Firecracker version v1.13.1 and earlier and 1.14.0 on Linux may allow a local host user with write access to the pre-created jailer directories to overwrite arbitrary host files via a symlink attack during the initialization copy at jailer startup, if the jailer is executed with root privileges. To mitigate this issue, users should upgrade to version v1.13.2 or 1.14.1 or above.

CVE Details

CVSS v3.1 Score6.0

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

Published1/23/2026

Last Modified1/30/2026

Sourcenvd

Honeypot Sightings0

Affected Products

amazon:firecracker

Weaknesses (CWE)

CWE-61

References

https://aws.amazon.com/security/security-bulletins/2026-003-AWS/(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/firecracker-microvm/firecracker/releases/tag/v1.13.2(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/firecracker-microvm/firecracker/releases/tag/v1.14.1(ff89ba41-3aa1-4d27-914a-91399e9639e5)

https://github.com/firecracker-microvm/firecracker/security/advisories/GHSA-36j2-f825-qvgc(ff89ba41-3aa1-4d27-914a-91399e9639e5)

IOC Correlations

No correlations recorded

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