CVE-2026-47241 (LOW): detected in Lambda Docker Images.

## CVE Details

| **CVE ID** | **Severity** | **Affected Package** | **Installed Version** | **Fixed Version** | **Date Published** | **Date of Scan** |
|-----------------|--------------|----------------------|-----------------------|-------------------|--------------------|------------------|
| [CVE-2026-47241](https://avd.aquasec.com/nvd/cve-2026-47241) | `LOW` | `net-imap` | `0.5.8` | `~> 0.5.15, >= 0.6.4.1` | `2026-06-22T21:16:24.677Z` | `2026-06-24T10:19:10.31724607Z` |

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## Affected Docker Images

| **Image Name** | **SHA** |
|-----------------------------|---------------------------------------|
| `public.ecr.aws/lambda/ruby:latest` | `public.ecr.aws/lambda/ruby@sha256:a00f8f33a0db8c2723951075efd02a008a758e3b86ee69a7448f3673b1790b00` |
| `public.ecr.aws/lambda/ruby:4.0` | `public.ecr.aws/lambda/ruby@sha256:deb470c7a55238628917444f3c4e7ad012ddab25cb22b072a38e5f16f8e5628e` |
| `public.ecr.aws/lambda/ruby:3.4` | `public.ecr.aws/lambda/ruby@sha256:a00f8f33a0db8c2723951075efd02a008a758e3b86ee69a7448f3673b1790b00` |
| `public.ecr.aws/lambda/ruby:3.3` | `public.ecr.aws/lambda/ruby@sha256:b1c634bf4af56649719a79ad3bbafd9bbd94384d2b2170f44dc84ed59bea1368` |

---

## Description

> Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a raw string argument which is only validated to prevent CRLF injection and then sent verbatim. If this string is derived from user-controlled input, an attacker can force the next command to be absorbed as a continuation of the first command. This will cause the first command to eventually fail, but also prevents it from returning until another command is sent (from another thread). That other command will not return until the connection is closed. This vulnerability is fixed in 0.6.5 and 0.5.15.

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### Remediation Steps
- Update the affected package `net-imap` from version `0.5.8` to `~> 0.5.15, >= 0.6.4.1`.

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

No files or tests are identified in the issue. Start by locating the build inputs for the affected Lambda Ruby images, then check how net-imap 0.5.8 is included; done means the package is updated to the stated fixed version range and the listed images are rebuilt without this CVE.

Written by the indexing model from the issue text.