Medium severity · published Jul 14, 2026
CVE-2026-46628
Twig: The `spaceless` filter implicitly marks its output as safe
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
Twig is a template language for PHP. Prior to 3.26.0, the deprecated spaceless filter is registered as safe for HTML, causing Twig autoescaping to emit attacker-controlled markup unescaped when spaceless is applied to untrusted input. This issue is fixed in version 3.26.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TW
Twig · twigphp
< 3.26.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46628
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46628
Patch
https://github.com/twigphp/Twig/commit/3190b9ae12614dfd58cc5d8f394bac4708b17913
Release Notes
https://github.com/twigphp/Twig/releases/tag/v3.26.0
Vendor Advisory
https://github.com/twigphp/Twig/security/advisories/GHSA-4j38-f5cw-54h7
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