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

[the-lambda-watchdog]

CVE Details

CVE ID	Severity	Affected Package	Installed Version	Fixed Version	Date Published	Date of Scan
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

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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.
• This issue was created automatically by Lambda Watchdog.