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Vulnerability record · CVE-2018-13818 · published 10 July 2018

CVE-2018-13818: Symfony twig code injection vulnerability

Symfony · Twig

Twig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key parameter. NOTE: the vendor points out that Twig itself is not a web application and states that it is the responsibility of web applications using Twig to properly wrap input to it

9.8 CVSS 3.0 Critical EPSS 6.9% · top 6.1% CWE-94 · Code injection
9.8CVSS 3.0 base score, v2 7.5
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 6 tagged exploit
17 Jun 2026Last modified by NVD

Description

Twig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key parameter. NOTE: the vendor points out that Twig itself is not a web application and states that it is the responsibility of web applications using Twig to properly wrap input to it

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://github.com/twigphp/Twig/blob/2.x/CHANGELOG Release Notes
https://github.com/twigphp/Twig/commit/eddb97148ad779f27e670e1e3f19fb323aedafeb PatchThird Party Advisory
https://github.com/twigphp/Twig/issues/2743 ExploitThird Party Advisory
https://mobile.twitter.com/jameel_nabbo/status/1032593354704515072?s=20 ExploitThird Party Advisory
https://www.exploit-db.com/exploits/44102/ ExploitThird Party AdvisoryVDB Entry
https://github.com/twigphp/Twig/blob/2.x/CHANGELOG Release Notes
https://github.com/twigphp/Twig/commit/eddb97148ad779f27e670e1e3f19fb323aedafeb PatchThird Party Advisory
https://github.com/twigphp/Twig/issues/2743 ExploitThird Party Advisory
https://mobile.twitter.com/jameel_nabbo/status/1032593354704515072?s=20 ExploitThird Party Advisory
https://www.exploit-db.com/exploits/44102/ ExploitThird Party AdvisoryVDB Entry

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2018-13818), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.