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TI-2026-34291 Aliases CVE-2026-46639GHSA-mm6w-gr99-p3jj

Twig: Sandbox property and method bypass via object-destructuring assignment

Priority LOW 31CWE-693Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-693.

Summary

Twig is a template language for PHP. From 3.24.0 until 3.26.0, object-destructuring assignment compiles CoreExtension::getAttribute() with the sandbox argument hardcoded to false, disabling property and method policy checks and allowing an attacker with write access to a sandboxed Twig template to read public properties or invoke public getters on objects passed to the template engine. This issue is fixed in version 3.26.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00394 33rd percentileScored 2026-11-07
Fix Fixed Twig (twigphp): 3.26.0twig/twig (Packagist): 3.26.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
symfonyTwig3.24.0 to before 3.26.03.26.0Patch availableCNA
—twig/twig (Packagist)3.24.0 to before 3.26.03.26.0Patch availableGHSA-mm6w-gr99-p3jj
  • Twig Vendorsymfony Affected 3.24.0 to before 3.26.0 Fixed in 3.26.0 Patch available CNA
  • twig/twig (Packagist) Vendor— Affected 3.24.0 to before 3.26.0 Fixed in 3.26.0 Patch available GHSA-mm6w-gr99-p3jj

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*3.24.0 to before 3.26.0Vulnerablesymfony
  • cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:* Versions 3.24.0 to before 3.26.0 Vulnerable ·symfony

Remediation

  • Fix · CNA Twig (twigphp) Fixed in 3.26.0
  • Fix · GHSA-mm6w-gr99-p3jj twig/twig (Packagist) Fixed in 3.26.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-46639
  2. 2026-10-03 Alias added: GHSA-mm6w-gr99-p3jj

References

Advisory 1

Other 4

  • TI-2026-34283 Twig: The `spaceless` filter implicitly marks its output as safe CVSS 4.0MEDIUM 5.1
  • TI-2022-07667 Code injection in Twig CVSS 3.1CRITICAL 9.8
  • TI-2018-10028 Twig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key… CVSS 3.0CRITICAL 9.8
  • TI-2022-18637 Twig may load a template outside a configured directory when using the filesystem loader CVSS 3.1HIGH 7.5
  • TI-2026-34292 Twig: Arbitrary PHP code execution via `_self.(<string>)` macro-reference compilation CVSS 4.0HIGH 8.7
  • TI-2026-34285 Twig: PHP code injection via `{% use %}` template name CVSS 4.0HIGH 8.7
See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences