CVE-2026-59873 (CRITICAL): detected in Lambda Docker Images.

## CVE Details

| **CVE ID** | **Severity** | **Affected Package** | **Installed Version** | **Fixed Version** | **Date Published** | **Date of Scan** |
|-----------------|--------------|----------------------|-----------------------|-------------------|--------------------|------------------|
| [CVE-2026-59873](https://avd.aquasec.com/nvd/cve-2026-59873) | `CRITICAL` | `tar` | `7.5.15` | `7.5.19` | `2026-07-08T16:16:33.867Z` | `2026-07-22T10:18:15.468343918Z` |

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## Affected Docker Images

| **Image Name** | **SHA** |
|-----------------------------|---------------------------------------|
| `public.ecr.aws/lambda/nodejs:latest` | `public.ecr.aws/lambda/nodejs@sha256:eca040a64243f44373fae948c0c1e13563d924a0b4c1b6a3c18d598f288ebf3f` |
| `public.ecr.aws/lambda/nodejs:24` | `public.ecr.aws/lambda/nodejs@sha256:eca040a64243f44373fae948c0c1e13563d924a0b4c1b6a3c18d598f288ebf3f` |
| `public.ecr.aws/lambda/nodejs:22` | `public.ecr.aws/lambda/nodejs@sha256:7fb30f61a372768a2ee1c1af89340e2b3b69782bc1135b0101669ee1106d1d0c` |

---

## Description

> node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.19, node-tar does not enforce hard upper bounds on total decompressed data, entry counts, or decompression ratio in extraction and parsing paths such as src/extract.ts, allowing a small crafted gzip bomb to exhaust disk space and CPU. This issue is fixed in version 7.5.19.

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### Remediation Steps
- Update the affected package `tar` from version `7.5.15` to `7.5.19`.

### 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](https://lambdawatchdog.com).
- This issue was created automatically by Lambda Watchdog.

Start by locating the Docker build definitions for the affected Lambda Node.js images and identify where the tar package version is provided. Update the affected images to use tar 7.5.19, rebuild the nodejs:22, nodejs:24, and latest images, then rerun the vulnerability scan to confirm the CVE is absent.

Written by the indexing model from the issue text.