CVE-2026-48806

EUVD-2026-44513
Twig is a template language for PHP. Prior to 3.27.0, ArrayExpression does not guard dynamic mapping keys that are coerced to strings, allowing PHP to invoke __toString() on a Stringable object used as a mapping key without calling SandboxExtension::ensureToStringAllowed(). This issue is fixed in version 3.27.0.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 34.58%
Affected Products (NVD)
VendorProductVersion
symfonytwig
𝑥
< 3.27.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
php-twig
bookworm
3.5.1-1+deb12u3
fixed
bookworm (security)
3.5.1-1+deb12u3
fixed
bullseye
2.14.3-1+deb11u2
fixed
bullseye (security)
2.14.3-1+deb11u4
fixed
forky
3.28.0-1
fixed
sid
3.28.0-1
fixed
trixie
3.27.0-0+deb13u1
fixed
trixie (security)
3.27.0-0+deb13u1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
php-twig
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
ignored
resolute
needs-triage
Common Weakness Enumeration
References
https://github.com/twigphp/Twig/commit/9ff41014639ef0e8eb50ac7669191c309d863105
https://github.com/twigphp/Twig/releases/tag/v3.27.0
https://github.com/twigphp/Twig/security/advisories/GHSA-5v5v-ww74-355v