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Vulnerability record · CVE-2019-11831 · published 9 May 2019

CVE-2019-11831: Typo3 pharstreamwrapper path traversal vulnerability

Typo3 · Pharstreamwrapper

The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before 3.1.1 for TYPO3 does not prevent directory traversal, which allows attackers to bypass a deserialization protection mechanism, as demonstrated by a phar:///path/bad.phar/../good.phar URL.

9.8 CVSS 3.1 Critical EPSS 5.4% · top 7.6% CWE-22 · Path traversalCWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score, v2 7.5
5.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
30References
17 Jun 2026Last modified by NVD

Description

The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before 3.1.1 for TYPO3 does not prevent directory traversal, which allows attackers to bypass a deserialization protection mechanism, as demonstrated by a phar:///path/bad.phar/../good.phar URL.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/108302 Third Party AdvisoryVDB Entry
https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v2.1.1 Release NotesThird Party Advisory
https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v3.1.1 Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00029.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/65ODQHDHWR74L6TCAPAQR5F
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6QDJVUJPUW3RZ4746SC6BX4
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUEXS4HRI4XZ2DTZMWAVQBY
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E3NUKPG7V4QEM6QXRMHYR4A
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6JX7WR6DPMKCZQP7EYFACY
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z246UWBXBEKTQUDTLRJTC7X
https://seclists.org/bugtraq/2019/May/36 Issue TrackingMailing ListThird Party Advisory
https://typo3.org/security/advisory/typo3-psa-2019-007/ Vendor Advisory
https://www.debian.org/security/2019/dsa-4445 Third Party Advisory
https://www.drupal.org/sa-core-2019-007 Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_19_22 Third Party Advisory
http://www.securityfocus.com/bid/108302 Third Party AdvisoryVDB Entry
https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v2.1.1 Release NotesThird Party Advisory
https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v3.1.1 Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00029.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/65ODQHDHWR74L6TCAPAQR5F
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6QDJVUJPUW3RZ4746SC6BX4
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUEXS4HRI4XZ2DTZMWAVQBY
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E3NUKPG7V4QEM6QXRMHYR4A
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6JX7WR6DPMKCZQP7EYFACY
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z246UWBXBEKTQUDTLRJTC7X
https://seclists.org/bugtraq/2019/May/36 Issue TrackingMailing ListThird Party Advisory
https://typo3.org/security/advisory/typo3-psa-2019-007/ Vendor Advisory
https://www.debian.org/security/2019/dsa-4445 Third Party Advisory
https://www.drupal.org/sa-core-2019-007 Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_19_22 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-11831), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.