# CVE-2026-46633: Twig: PHP code injection via `{% use %}` template name

Status: published. Published: 2026-07-14. Updated: 2026-11-04.

Twig is a template language for PHP. Starting in 1.15.1 and 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.

## Remediation

- fix: twig/twig (Packagist): OSV reports a fixed version 3.26.0. Check the advisory for supported release branches. (source: OSV GHSA-7p85-w9px-jpjp) — https://github.com/advisories/GHSA-7p85-w9px-jpjp

## Affected products and versions

- twigphp / Twig: >= 1.15.1, < 3.26.0 (affected). Source: CNA: GitHub_M
-  / twig/twig (twig/twig): v1.15.1 (affected, Packagist); v1.16.0 (affected, Packagist); v1.16.1 (affected, Packagist); v1.16.2 (affected, Packagist); v1.16.3 (affected, Packagist); v1.17.0 (affected, Packagist); v1.18.0 (affected, Packagist); v1.18.1 (affected, Packagist); v1.18.2 (affected, Packagist); v1.19.0 (affected, Packagist); v1.20.0 (affected, Packagist); v1.21.0 (affected, Packagist); v1.21.1 (affected, Packagist); v1.21.2 (affected, Packagist); v1.22.0 (affected, Packagist); v1.22.1 (affected, Packagist); v1.22.2 (affected, Packagist); v1.22.3 (affected, Packagist); v1.23.0 (affected, Packagist); v1.23.1 (affected, Packagist); v1.23.2 (affected, Packagist); v1.23.3 (affected, Packagist); v1.24.0 (affected, Packagist); v1.24.1 (affected, Packagist); v1.24.2 (affected, Packagist); v1.25.0 (affected, Packagist); v1.26.0 (affected, Packagist); v1.26.1 (affected, Packagist); v1.27.0 (affected, Packagist); v1.28.0 (affected, Packagist); v1.28.1 (affected, Packagist); v1.28.2 (affected, Packagist); v1.29.0 (affected, Packagist); v1.30.0 (affected, Packagist); v1.31.0 (affected, Packagist); v1.32.0 (affected, Packagist); v1.33.0 (affected, Packagist); v1.33.1 (affected, Packagist); v1.33.2 (affected, Packagist); v1.34.0 (affected, Packagist); v1.34.1 (affected, Packagist); v1.34.2 (affected, Packagist); v1.34.3 (affected, Packagist); v1.34.4 (affected, Packagist); v1.35.0 (affected, Packagist); v1.35.1 (affected, Packagist); v1.35.2 (affected, Packagist); v1.35.3 (affected, Packagist); v1.35.4 (affected, Packagist); v1.36.0 (affected, Packagist); v1.37.0 (affected, Packagist); v1.37.1 (affected, Packagist); v1.38.0 (affected, Packagist); v1.38.1 (affected, Packagist); v1.38.2 (affected, Packagist); v1.38.3 (affected, Packagist); v1.38.4 (affected, Packagist); v1.39.0 (affected, Packagist); v1.39.1 (affected, Packagist); v1.40.0 (affected, Packagist); v1.40.1 (affected, Packagist); v1.41.0 (affected, Packagist); v1.42.0 (affected, Packagist); v1.42.1 (affected, Packagist); v1.42.2 (affected, Packagist); v1.42.3 (affected, Packagist); v1.42.4 (affected, Packagist); v1.42.5 (affected, Packagist); v1.43.0 (affected, Packagist); v1.43.1 (affected, Packagist); v1.44.0 (affected, Packagist); v1.44.1 (affected, Packagist); v1.44.2 (affected, Packagist); v1.44.3 (affected, Packagist); v1.44.4 (affected, Packagist); v1.44.5 (affected, Packagist); v1.44.6 (affected, Packagist); v1.44.7 (affected, Packagist); v1.44.8 (affected, Packagist); v2.0.0 (affected, Packagist); v2.1.0 (affected, Packagist); v2.10.0 (affected, Packagist); v2.11.0 (affected, Packagist); v2.11.1 (affected, Packagist); v2.11.2 (affected, Packagist); v2.11.3 (affected, Packagist); v2.12.0 (affected, Packagist); v2.12.1 (affected, Packagist); v2.12.2 (affected, Packagist); v2.12.3 (affected, Packagist); v2.12.4 (affected, Packagist); v2.12.5 (affected, Packagist); v2.13.0 (affected, Packagist); v2.13.1 (affected, Packagist); v2.14.0 (affected, Packagist); v2.14.1 (affected, Packagist); v2.14.10 (affected, Packagist); v2.14.11 (affected, Packagist); v2.14.12 (affected, Packagist); v2.14.13 (affected, Packagist); v2.14.2 (affected, Packagist); v2.14.3 (affected, Packagist); v2.14.4 (affected, Packagist); v2.14.5 (affected, Packagist); v2.14.6 (affected, Packagist); v2.14.7 (affected, Packagist); v2.14.8 (affected, Packagist); v2.14.9 (affected, Packagist); v2.15.0 (affected, Packagist); v2.15.1 (affected, Packagist); v2.15.2 (affected, Packagist); v2.15.3 (affected, Packagist); v2.15.4 (affected, Packagist); v2.15.5 (affected, Packagist); v2.15.6 (affected, Packagist); v2.16.0 (affected, Packagist); v2.16.1 (affected, Packagist); v2.2.0 (affected, Packagist); v2.3.0 (affected, Packagist); v2.3.1 (affected, Packagist); v2.3.2 (affected, Packagist); v2.4.0 (affected, Packagist); v2.4.1 (affected, Packagist); v2.4.2 (affected, Packagist); v2.4.3 (affected, Packagist); v2.4.4 (affected, Packagist); v2.4.5 (affected, Packagist); v2.4.6 (affected, Packagist); v2.4.7 (affected, Packagist); v2.4.8 (affected, Packagist); v2.5.0 (affected, Packagist); v2.6.0 (affected, Packagist); v2.6.1 (affected, Packagist); v2.6.2 (affected, Packagist); v2.7.0 (affected, Packagist); v2.7.1 (affected, Packagist); v2.7.2 (affected, Packagist); v2.7.3 (affected, Packagist); v2.7.4 (affected, Packagist); v2.8.0 (affected, Packagist); v2.8.1 (affected, Packagist); v2.9.0 (affected, Packagist); v3.0.0 (affected, Packagist); v3.0.0-BETA1 (affected, Packagist); v3.0.1 (affected, Packagist); v3.0.2 (affected, Packagist); v3.0.3 (affected, Packagist); v3.0.4 (affected, Packagist); v3.0.5 (affected, Packagist); v3.1.0 (affected, Packagist); v3.1.1 (affected, Packagist); v3.10.0 (affected, Packagist); v3.10.1 (affected, Packagist); v3.10.2 (affected, Packagist); v3.10.3 (affected, Packagist); v3.11.0 (affected, Packagist); v3.11.1 (affected, Packagist); v3.11.2 (affected, Packagist); v3.11.3 (affected, Packagist); v3.12.0 (affected, Packagist); v3.13.0 (affected, Packagist); v3.14.0 (affected, Packagist); v3.14.1 (affected, Packagist); v3.14.2 (affected, Packagist); v3.15.0 (affected, Packagist); v3.16.0 (affected, Packagist); v3.17.0 (affected, Packagist); v3.17.1 (affected, Packagist); v3.18.0 (affected, Packagist); v3.19.0 (affected, Packagist); v3.2.1 (affected, Packagist); v3.20.0 (affected, Packagist); v3.21.0 (affected, Packagist); v3.21.1 (affected, Packagist); v3.22.0 (affected, Packagist); v3.22.1 (affected, Packagist); v3.22.2 (affected, Packagist); v3.23.0 (affected, Packagist); v3.24.0 (affected, Packagist); v3.25.0 (affected, Packagist); v3.3.0 (affected, Packagist); v3.3.1 (affected, Packagist); v3.3.10 (affected, Packagist); v3.3.2 (affected, Packagist); v3.3.3 (affected, Packagist); v3.3.4 (affected, Packagist); v3.3.5 (affected, Packagist); v3.3.6 (affected, Packagist); v3.3.7 (affected, Packagist); v3.3.8 (affected, Packagist); v3.3.9 (affected, Packagist); v3.4.0 (affected, Packagist); v3.4.1 (affected, Packagist); v3.4.2 (affected, Packagist); v3.4.3 (affected, Packagist); v3.5.0 (affected, Packagist); v3.5.1 (affected, Packagist); v3.6.0 (affected, Packagist); v3.6.1 (affected, Packagist); v3.7.0 (affected, Packagist); v3.7.1 (affected, Packagist); v3.8.0 (affected, Packagist); v3.9.0 (affected, Packagist); v3.9.1 (affected, Packagist); v3.9.2 (affected, Packagist); v3.9.3 (affected, Packagist); Ecosystem version events: introduced 1.15.1; fixed 3.26.0. Source: OSV GHSA-7p85-w9px-jpjp

## Severity and prioritization

- CVSS 4.0: 8.7 (high); 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; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: 0.69% as of 2026-11-03; percentile 52.76%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-94

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/twigphp/Twig/security/advisories/GHSA-7p85-w9px-jpjp (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/twigphp/Twig/commit/679447fa29083043665482ccf7d64372472621b8 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/twigphp/Twig/commit/a2c6db7ea7d2c90923e6708019ec1442526d1c30 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/twigphp/Twig/commit/e9ff55f6910832428e48a35b2e0748189ad49ae3 (CNA: GitHub_M; x_refsource_MISC)

- https://gist.github.com/vladko312/d61b950f168c791db4786b83dc7a81e6 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2026-46633.yaml (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/twigphp/Twig/releases/tag/v3.26.0 (CNA: GitHub_M; x_refsource_MISC)

- https://symfony.com/cve-2026-46633 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/advisories/GHSA-7p85-w9px-jpjp (OSV / GitHub Security Advisories; advisory)

- https://osv.dev/vulnerability/GHSA-7p85-w9px-jpjp (OSV / GitHub Security Advisories; osv)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-46633; retrieved 2026-11-04; source updated 2026-11-04

- OSV / GitHub Security Advisories: https://osv.dev/vulnerability/GHSA-7p85-w9px-jpjp; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-46633; retrieved 2026-11-04; source updated Not reported

Revision: cd8d445ca068be226d26f10031131943e7b8523b9cd359728ffecd6a9d720d2b

Canonical: https://y2.dev/cve/CVE-2026-46633

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