CVE-2026-46633
Last modified
CVE-2026-46633 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Twig is a template language for PHP. Prior to 3.26.0, Compiler::string() does not escape single quotes when a template name from a {% use %} tag is placed inside a PHP single-quoted string literal, allowing a crafted template name to terminate the string and inject arbitrary PHP expressions into the compiled cache file. EPSS estimates a 0.52% chance of exploitation in the next 30 days.
Description
Twig is a template language for PHP. Prior to 3.26.0, Compiler::string() does not escape single quotes when a template name from a {% use %} tag is placed inside a PHP single-quoted string literal, allowing a crafted template name to terminate the string and inject arbitrary PHP expressions into the compiled cache file. This issue is fixed in version 3.26.0.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Symfony | Twig | < 3.26.0 |
References
- https://github.com/twigphp/Twig/releases/tag/v3.26.0Release Notes
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-46633?
How severe is CVE-2026-46633?
How do I fix CVE-2026-46633?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-46624Twenty is an open source CRM. From 1.7.7 through 1.16.7, a c…9.9
- CVE-2026-46625JavaScript Cookie is a JavaScript API for handling cookies, …7.5
- CVE-2026-46627Twig is a template language for PHP. Prior to 3.26.0, the Tw…6.5
- CVE-2026-46628Twig is a template language for PHP. Prior to 3.26.0, the de…5.4
- CVE-2026-46629Twig is a template language for PHP. Prior to 3.26.0, twig/i…6.5
- CVE-2026-4663Rejected reason: ** REJECT ** DO NOT USE THIS CANDIDATE NUMB…
- CVE-2026-46634Twig is a template language for PHP. From 3.9.0 until 3.26.0…9.8
- CVE-2026-46635Twig is a template language for PHP. Prior to 3.26.0, the co…4.3
- CVE-2026-46637Twig is a template language for PHP. Prior to 3.26.0, severa…5.4
- CVE-2026-46638Twig is a template language for PHP. Prior to 3.26.0, {% san…8.1
- CVE-2026-46639Twig is a template language for PHP. From 3.24.0 until 3.26.…6.5
- CVE-2026-4664The Customer Reviews for WooCommerce plugin for WordPress is…5.3
Are you affected by CVE-2026-46633?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST