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CVE-2026-46627

Twig: Sandbox resource exhaustion via unbounded `for` / `range()`

Published: Jul 14, 2026Updated: Jul 16, 2026 Sources: CVE List NVDCWE-400
6.5MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 68.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Twig is a template language for PHP. Prior to 3.26.0, the Twig sandbox does not prevent a template from consuming CPU, memory, or wall-clock time, even under the strictest allow-list, allowing untrusted templates to cause resource exhaustion. This issue is addressed in version 3.26.0 by documenting that the sandbox does not protect against resource exhaustion.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-400

Affected Products

twigphp
oss-projectaka twig
TwigLibrary
OSS Libraries / web-framework
symfony
oss-projectaka symfony framework, twig (related)
twigLibrary
OSS Libraries / web-framework

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/twigphp/Twig/security/advisories/GHSA-923g-j88x-j34q
github.com
https://github.com/twigphp/Twig/commit/6bfa285e2f98651adb7aa480bf83a741d154f09f
github.com
https://github.com/twigphp/Twig/releases/tag/v3.26.0
github.com

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