[TYPO3-announce] [Ticket#2026012010000018] Vulnerabilities in multiple third party TYPO3 CMS extensions

[TYPO3 Security Team]

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]https://typo3.org/security/advisory/typo3-ext-sa-2026-003

TYPO3-EXT-SA-2026-004: Vulnerability in bundled package in extension "Amazon
AWS SDK" (aws)
[4]https://typo3.org/security/advisory/typo3-ext-sa-2026-004

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]https://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce

See all TYPO3 security advisories:
[7]https://typo3.org/help/security-advisories

Best regards,

Torben Hansen
Member of the TYPO3 Security Team

--
TYPO3 Security Team homepage: [8]https://typo3.org/teams/security/

E-Mail: security at typo3.org

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[1] https://typo3.org/security/advisory/typo3-ext-sa-2026-001
[2] https://typo3.org/security/advisory/typo3-ext-sa-2026-002
[3] https://typo3.org/security/advisory/typo3-ext-sa-2026-003
[4] https://typo3.org/security/advisory/typo3-ext-sa-2026-004
[5] https://docs.typo3.org/typo3cms/CoreApiReference/Security/Index.html
[6] https://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce
[7] https://typo3.org/help/security-advisories
[8] https://typo3.org/teams/security/