CVE-2026-23949 (HIGH): detected in Lambda Docker Images.

## CVE Details

| **CVE ID** | **Severity** | **Affected Package** | **Installed Version** | **Fixed Version** | **Date Published** | **Date of Scan** |
|-----------------|--------------|----------------------|-----------------------|-------------------|--------------------|------------------|
| [CVE-2026-23949](https://avd.aquasec.com/nvd/cve-2026-23949) | `HIGH` | `jaraco.context` | `5.3.0` | `6.1.0` | `2026-01-20T01:15:57.723Z` | `2026-01-22T10:19:10.838416829Z` |

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## Affected Docker Images

| **Image Name** | **SHA** |
|-----------------------------|---------------------------------------|
| `public.ecr.aws/lambda/python:3.11` | `public.ecr.aws/lambda/python@sha256:e3ff92d11a35ba659794b89e612a73e17bb009b6075757314cf931b378b90a8a` |
| `public.ecr.aws/lambda/python:3.10` | `public.ecr.aws/lambda/python@sha256:f3ec524265e82a868ae32afd8c3edf2dd3f442ea5470640b0e68c5cb2aadaea4` |

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## Description

> jaraco.context, an open-source software package that provides some useful decorators and context managers, has a Zip Slip path traversal vulnerability in the `jaraco.context.tarball()` function starting in version 5.2.0 and prior to version 6.1.0. The vulnerability may allow attackers to extract files outside the intended extraction directory when malicious tar archives are processed. The strip_first_component filter splits the path on the first `/` and extracts the second component, while allowing `../` sequences. Paths like `dummy_dir/../../etc/passwd` become `../../etc/passwd`. Note that this suffers from a nested tarball attack as well with multi-level tar files such as `dummy_dir/inner.tar.gz`, where the inner.tar.gz includes a traversal `dummy_dir/../../config/.env` that also gets translated to `../../config/.env`. Version 6.1.0 contains a patch for the issue.

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### Remediation Steps
- Update the affected package `jaraco.context` from version `5.3.0` to `6.1.0`.

### 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.