[TYPO3-announce] [Ticket#2025052010000012] 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:

"Download manager" (reint_downloadmanager)
"[clickstorm] SEO" (cs_seo)
"femanager" (femanager)
"Backup Plus" (ns_backup)
"Front End User Registration" (sr_feuser_register)

For further information on the issues, please read the related advisories
TYPO3-EXT-SA-2025-004, TYPO3-EXT-SA-2025-005, TYPO3-EXT-SA-2025-006,
TYPO3-EXT-SA-2025-007 and TYPO3-EXT-SA-2025-008 which were published today:

TYPO3-EXT-SA-2025-004: Insecure Direct Object Reference in extension "Download
manager" (reint_downloadmanager)
[1]https://typo3.org/security/advisory/typo3-ext-sa-2025-004

TYPO3-EXT-SA-2025-005: Cross-Site Scripting in extension "[clickstorm] SEO"
(cs_seo)
[2]https://typo3.org/security/advisory/typo3-ext-sa-2025-005

TYPO3-EXT-SA-2025-006: Insecure Direct Object Reference in extension
"femanager" (femanager)
[3]https://typo3.org/security/advisory/typo3-ext-sa-2025-006

TYPO3-EXT-SA-2025-007: Multiple vulnerabilities in extension "Backup Plus"
(ns_backup)
[4]https://typo3.org/security/advisory/typo3-ext-sa-2025-007

TYPO3-EXT-SA-2025-008: Multiple vulnerabilities in extension "Front End User
Registration" (sr_feuser_register)
[5]https://typo3.org/security/advisory/typo3-ext-sa-2025-008

In general the TYPO3 Security Team recommends to read the following pages:

The TYPO3 Security Guide:
[6][7]https://docs.typo3.org/typo3cms/CoreApiReference/Security/Index.html

Make sure you are subscribed to the TYPO3 Announce List:
[8][9]https://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce

See all TYPO3 security advisories:
[10][11]https://typo3.org/help/security-advisories

Best regards,

Elias Häußler
Member of the TYPO3 Security Team

--
TYPO3 Security Team homepage: [12]https://typo3.org/teams/security/

E-Mail: security at typo3.org

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[1] https://typo3.org/security/advisory/typo3-ext-sa-2025-004
[2] https://typo3.org/security/advisory/typo3-ext-sa-2025-005
[3] https://typo3.org/security/advisory/typo3-ext-sa-2025-006
[4] https://typo3.org/security/advisory/typo3-ext-sa-2025-007
[5] https://typo3.org/security/advisory/typo3-ext-sa-2025-008
[6] https://docs.typo3.org/typo3cms/CoreApiReference/Security/Index.html
[7] https://docs.typo3.org/typo3cms/CoreApiReference/Security/Index.html
[8] https://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce
[9] https://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce
[10] https://typo3.org/help/security-advisories/
[11] https://typo3.org/help/security-advisories
[12] https://typo3.org/teams/security/