Skip to content

CVE-2026-26960 (HIGH): detected in Lambda Docker Images. #428

@the-lambda-watchdog

Description

@the-lambda-watchdog

CVE Details

CVE ID Severity Affected Package Installed Version Fixed Version Date Published Date of Scan
CVE-2026-26960 HIGH tar 6.2.1 7.5.8 2026-02-20T02:16:53.883Z 2026-02-20T10:19:04.799927151Z

Affected Docker Images

Image Name SHA
public.ecr.aws/lambda/nodejs:latest public.ecr.aws/lambda/nodejs@sha256:75324e6335efc458856ddcb49429a5806fa66c581529746296ded84f0f8fdd92
public.ecr.aws/lambda/nodejs:24 public.ecr.aws/lambda/nodejs@sha256:2ae0aecfac970190fe1fa2f9de439fb35340d285eb29a715ce6daf18eda7f54c
public.ecr.aws/lambda/nodejs:22 public.ecr.aws/lambda/nodejs@sha256:75324e6335efc458856ddcb49429a5806fa66c581529746296ded84f0f8fdd92
public.ecr.aws/lambda/nodejs:20 public.ecr.aws/lambda/nodejs@sha256:b1d950b97aaedc054c6c9c5409c98cf5c8f29de370a6f344113e1aeeaa441707

Description

node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8.


Remediation Steps

  • Update the affected package tar from version 6.2.1 to 7.5.8.

About this issue

  • This issue may not contain all the information about the CVE nor the images it affects.
  • This issue will not be updated with new information and the list of affected images may have changed since the creation of this issue.
  • For more, visit Lambda Watchdog.
  • This issue was created automatically by Lambda Watchdog.

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions