CVE-2019-11830: TYPO3 Pharstreamwrapper

Critical severity, CVSS 9.8. EPSS: 2.7% chance of exploitation in the next 30 days.

PharMetaDataInterceptor in the PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before 3.1.1 for TYPO3 mishandles Phar stub parsing, which allows attackers to bypass a deserialization protection mechanism.

Affected products

• TYPO3 Pharstreamwrapper: from 2.0.0, before 2.1.1 (fixed in 2.1.1); from 3.0.0, before 3.1.1 (fixed in 3.1.1)

Published 2019-05-09. Last modified 2026-06-17.