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Vulnerability record · CVE-2019-9942 · published 23 March 2019

CVE-2019-9942: Symfony twig vulnerability

Symfony · Twig

A sandbox information disclosure exists in Twig before 1.38.0 and 2.x before 2.7.0 because, under some circumstances, it is possible to call the __toString() method on an object even if not allowed by the security policy in place.

3.7 CVSS 3.1 Low EPSS 1.4% · top 28.1%
3.7CVSS 3.1 base score, v2 4.3
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A sandbox information disclosure exists in Twig before 1.38.0 and 2.x before 2.7.0 because, under some circumstances, it is possible to call the __toString() method on an object even if not allowed by the security policy in place.

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

Affected products

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

References

LinkTags
https://github.com/twigphp/Twig/commit/eac5422956e1dcca89a3669a03a3ff32f0502077 PatchThird Party Advisory
https://seclists.org/bugtraq/2019/Mar/60 Mailing ListThird Party Advisory
https://symfony.com/blog/twig-sandbox-information-disclosure PatchVendor Advisory
https://www.debian.org/security/2019/dsa-4419 Third Party Advisory
https://github.com/twigphp/Twig/commit/eac5422956e1dcca89a3669a03a3ff32f0502077 PatchThird Party Advisory
https://seclists.org/bugtraq/2019/Mar/60 Mailing ListThird Party Advisory
https://symfony.com/blog/twig-sandbox-information-disclosure PatchVendor Advisory
https://www.debian.org/security/2019/dsa-4419 Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-9942), CISA KEV, FIRST EPSS (scores of 2026-10-13). This page is refreshed as NVD updates the record.