Typo3
CVE-2026-0859
HIGH
GHSA-7vp9-x248-9vr9
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
TYPO3's mail‑file spool deserialization flaw lets local users with write access to the spool directory craft a malicious file that is deserialized during the mailer:spool:send command, enabling arbitrary PHP code execution on the web server. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.
AnalysisAI
Arbitrary PHP code execution in TYPO3 CMS versions 10.0.0 through 14.0.1 through unsafe deserialization of mail spool files, allowing local attackers with write access to the spool directory to execute malicious code when the mailer:spool:send command is executed. Affected versions span multiple release lines including 10.x, 11.x, 12.x, 13.x, and 14.x, requiring immediate patching to prevent web server compromise.
Technical ContextAI
Classified as CWE-502 (Deserialization of Untrusted Data). Affects Typo3. TYPO3's mail‑file spool deserialization flaw lets local users with write access to the spool directory craft a malicious file that is deserialized during the mailer:spool:send command, enabling arbitrary PHP code execution on the web server. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.
RemediationAI
A vendor patch is available — apply it immediately.
Unrestricted File Upload vulnerability in the fileDenyPattern in sysext/core/Classes/Core/SystemEnvironmentBuilder.php i
The frontend rendering component in TYPO3 4.5.x before 4.5.39, 4.6.x through 6.2.x before 6.2.9, and 7.x before 7.0.2, w
Cross-site scripting (XSS) vulnerability in the Backend component in TYPO3 6.2.x before 6.2.19 allows remote attackers t
TYPO3 is a free and open source Content Management Framework released under the GNU General Public License. Rated medium
TYPO3 is an open source PHP based web content management system. Rated medium severity (CVSS 6.1), this vulnerability is
TYPO3 Fluid Engine (package `typo3fluid/fluid`) before versions 2.0.5, 2.1.4, 2.2.1, 2.3.5, 2.4.1, 2.5.5 or 2.6.1 is vul
svg.swf in TYPO3 6.2.0 to 6.2.38 ELTS and 7.0.0 to 7.1.0 could allow an unauthenticated, remote attacker to conduct a cr
In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.17 and greater than or equal to 10.0.0 and less than 10.4.
Bootstrap Package is a theme for TYPO3. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, lo
TYPO3 7.6.15 sends an http request to an index.php?loginProvider URI in cases with an https Referer, which allows remote
TYPO3 before 13.3.1 allows denial of service (interface error) in the Bookmark Toolbar (ext:backend), exploitable by an
TYPO3 is an open source PHP based web content management system. Rated high severity (CVSS 8.8), this vulnerability is r
Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
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