Dear TYPO3 users,
several vulnerabilities have been found in the following third party TYPO3
extensions:
"Mailqueue" (mailqueue)
"AWS SDK for PHP" (aws_sdk_php)
"Amazon Web Services (AWS) Toolbox" (aws_tools)
"Amazon AWS SDK" (aws)
For further information on the issues, please read the related advisories
TYPO3-EXT-SA-2026-001, TYPO3-EXT-SA-2026-002, TYPO3-EXT-SA-2026-003 and
TYPO3-EXT-SA-2026-004 which were published today:
TYPO3-EXT-SA-2026-001: Insecure Deserialization in extension "Mailqueue"
(mailqueue)
[1]https://typo3.org/security/advisory/typo3-ext-sa-2026-001
TYPO3-EXT-SA-2026-002: Vulnerability in bundled package in extension "AWS SDK
for PHP" (aws_sdk_php)
[2]https://typo3.org/security/advisory/typo3-ext-sa-2026-002
TYPO3-EXT-SA-2026-003: Vulnerability in bundled package in extension "Amazon
Web Services (AWS) Toolbox" (aws_tools)
[3]TYPO3-EXT-SA-2026-003: Vulnerability in bundled package in extension "Amazon Web Services (AWS) Toolbox" (aws_tools) - TYPO3 Association
TYPO3-EXT-SA-2026-004: Vulnerability in bundled package in extension "Amazon
AWS SDK" (aws)
[4]TYPO3-EXT-SA-2026-004: Vulnerability in bundled package in extension "Amazon AWS SDK" (aws) - TYPO3 Association
In general the TYPO3 Security Team recommends to read the following pages:
The TYPO3 Security Guide:
[5]https://docs.typo3.org/typo3cms/CoreApiReference/Security/Index.html
Make sure you are subscribed to the TYPO3 Announce List:
[6]TYPO3-announce Info Page
See all TYPO3 security advisories:
[7]Security Advisories - TYPO3 Association
Best regards,
Torben Hansen
Member of the TYPO3 Security Team