GHSA-7p85-w9px-jpjp
Suggest an improvement- Source
- https://github.com/advisories/GHSA-7p85-w9px-jpjp
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-7p85-w9px-jpjp/GHSA-7p85-w9px-jpjp.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-7p85-w9px-jpjp
- Aliases
-
- CVE-2026-46633
- Related
- Published
- 2026-05-21T21:24:53Z
- Modified
- 2026-05-23T18:29:19.113512772Z
- Severity
-
- 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Twig: PHP code injection via `{% use %}` template name
- Details
-
Description
Compiler::string()escapes",$,\, NUL and TAB when generating PHP double-quoted string literals, but does not escape single quotes. InModuleNode::compileConstructor(), the template name from a{% use %}tag is compiled viasubcompile()->string()and placed inside a surrounding PHP single-quoted string literal. A template name containing a single quote terminates that surrounding string early, allowing arbitrary PHP expressions to be injected into the compiled cache file.The injected code executes within the PHP process when the cache file is first loaded, bypassing the Twig sandbox entirely and achieving remote code execution.
SecurityPolicyunconditionally allows{% use %}regardless of the configuredallowedTags, so this primitive is reachable from sandboxed templates as well.Resolution
Compiler::string()now also escapes single quotes so that template names placed inside single-quoted PHP literals can no longer break out of the surrounding context.Credits
Twig would like to thank Anvil Secure in collaboration with Claude and Anthropic Research for reporting the issue and providing the fix.
- Database specific
{ "cwe_ids": [ "CWE-94" ], "github_reviewed": true, "github_reviewed_at": "2026-05-21T21:24:53Z", "nvd_published_at": null, "severity": "CRITICAL" }- References
Affected packages
Packagist / twig/twig
Package
- Name
- twig/twig
- Purl
- pkg:composer/twig%2Ftwig
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed3.26.0