CVE-2019-11830

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-05-09 · updated 2026-06-17
Weakness: CWE-502

Description

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; from 3.0.0 before 3.1.1 — fixed in 2.1.1, 3.1.1

How to fix

Upgrade to a fixed version: TYPO3 Pharstreamwrapper 2.1.1, 3.1.1. Check the vendor advisory for mitigations.

References

https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v2.1.1
https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v3.1.1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/65ODQHDHWR74L6TCAPAQR5FQHG6MCXAW/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUEXS4HRI4XZ2DTZMWAVQBYBTFSJ34AR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6JX7WR6DPMKCZQP7EYFACYXSGJ3K523/
https://typo3.org/security/advisory/typo3-psa-2019-008/
https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v2.1.1
https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v3.1.1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/65ODQHDHWR74L6TCAPAQR5FQHG6MCXAW/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUEXS4HRI4XZ2DTZMWAVQBYBTFSJ34AR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6JX7WR6DPMKCZQP7EYFACYXSGJ3K523/
https://typo3.org/security/advisory/typo3-psa-2019-008/

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