CVE-2026-6357 (MEDIUM): detected in Lambda Docker Images.
Nobody has claimed this yet.
Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 45/100
Research direction
Start by locating the Docker image definitions or build entry points for the listed Lambda Python images and check how pip 25.3 is installed. Update the affected images to use pip 26.1, rebuild them, and confirm the vulnerability scan no longer reports CVE-2026-6357.
Written by the indexing model from the issue text.
Description
CVE Details
| CVE ID | Severity | Affected Package | Installed Version | Fixed Version | Date Published | Date of Scan |
|---|---|---|---|---|---|---|
| CVE-2026-6357 | MEDIUM |
pip |
25.3 |
26.1 |
2026-04-27T15:16:20.857Z |
2026-05-07T10:18:45.188533044Z |
Affected Docker Images
| Image Name | SHA |
|---|---|
public.ecr.aws/lambda/python:latest |
public.ecr.aws/lambda/python@sha256:67b32eb858d2124326e3887fa825a0db934cbbd22f2b0ce489ee1def49020cfe |
public.ecr.aws/lambda/python:3.14 |
public.ecr.aws/lambda/python@sha256:0c835d3c9914f58235f5e06d57518da4e93352be1969f4f2b28718a08b7a2745 |
public.ecr.aws/lambda/python:3.13 |
public.ecr.aws/lambda/python@sha256:67b32eb858d2124326e3887fa825a0db934cbbd22f2b0ce489ee1def49020cfe |
public.ecr.aws/lambda/python:3.12 |
public.ecr.aws/lambda/python@sha256:a72dd317346038b51d46d04bca69824936ac417ba7c5331bd0bc544f25ba40a1 |
public.ecr.aws/lambda/python:3.11 |
public.ecr.aws/lambda/python@sha256:cd5d6925dac3a578a58ea2af17ecc7c9bece98f1e1d993f5165f69caf7129225 |
public.ecr.aws/lambda/python:3.10 |
public.ecr.aws/lambda/python@sha256:9dbd3f8e1e1fbc65eef14ef267be21dde0aef57efb958fa170c77f0f7e71f2a9 |
Description
pip prior to version 26.1 would run self-update check functionality after installing wheel files which required importing well-known Python modules names. These module imports were intentionally deferred to increase startup time of the pip CLI. The patch changes self-update functionality to run before wheels are installed to prevent newly-installed modules from being imported shortly after the installation of a wheel package. Users should still review package contents prior to installation.
Remediation Steps
- Update the affected package
pipfrom version25.3to26.1.
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.
- Dominant language
- No language data
- Stars
- 777
- Forks
- 118
- PR merge metrics
- No merged PRs in 30d
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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