CVE-2026-0859

Packagist/typo3/cms-core CVE-2026-0859: medium

TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool

Action: Upgrade typo3/cms-core to 10.4.55 or later.

composer require typo3/cms-core:14.0.2

composer require typo3/cms-core:13.4.23

composer require typo3/cms-core:12.4.41

composer require typo3/cms-core:11.5.49

composer require typo3/cms-core:10.4.55

Affected

Fixed versions

Sources

• osv: GHSA-7vp9-x248-9vr9
• https://github.com/TYPO3/typo3/security/advisories/GHSA-7vp9-x248-9vr9
• https://nvd.nist.gov/vuln/detail/CVE-2026-0859
• https://github.com/TYPO3/typo3/commit/3225d705080a1bde57a66689621c947da5a4782f
• https://github.com/TYPO3/typo3/commit/722bf71c118b0a8e4f2c2494854437d846799a13
• https://github.com/TYPO3/typo3/commit/e0f0ceee480c203fbb60b87454f5f193e541d27f
• https://github.com/TYPO3/typo3
• https://typo3.org/security/advisory/typo3-core-sa-2026-004

CVE-2026-0859 · published 2026-01-13T21:54:06Z · modified 2026-02-03T02:58:50.367259Z · JSON