CVE-2026-1386

Jan. 23, 2026, 9:15 p.m.

6.0
Medium

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.

Product(s) Impacted

Vendor Product Versions
Firecracker
  • Firecracker
  • <1.13.2, 1.14.0

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-61
UNIX Symbolic Link (Symlink) Following
The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a firecracker firecracker <1.13.2 / / / / / / /
a firecracker firecracker 1.14.0 / / / / / / /

References

https://aws.amazon.com/security/security-bulletins/2026-003-AWS/
https://github.com/firecracker-microvm/firecracker/releases/tag/v1.13.2
https://github.com/firecracker-microvm/firecracker/releases/tag/v1.14.1
https://github.com/firecracker-microvm/firecracker/security/advisories/GHSA-36j2-f825-qvgc

Tags

CWE-61
ff89ba41-3aa1-4d27-914a-91399e9639e5
2026-01-23
CVE-2026-1386

CVSS Score

6.0 / 10

CVSS Data - 4.0

  • Attack Vector: LOCAL
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: HIGH
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: NONE
  • Exploit Maturity: NOT_DEFINED

    • CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: Jan. 23, 2026, 9:15 p.m.
Last Modified: Jan. 23, 2026, 9:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

ff89ba41-3aa1-4d27-914a-91399e9639e5

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.