CVE-2026-48807CWE-693CWE-863

Twig: Sandbox `__toString()` policy bypass via `Traversable` in `join` and `replace` filters

High · published July 14, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
29.4
In the wild
Unconfirmed
What it is

Twig is a template language for PHP. Prior to 3.27.0, the sandbox __toString() checks do not fully cover Traversable values passed to join and replace filters or operands evaluated by the in and not in operators, allowing contained Stringable objects to be coerced to strings without consulting the sandbox policy. This issue is fixed in version 3.27.0.

The record
Technical detail
CVSS v4.0
7.1 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00367 · 29.4th percentile
Weaknesses
CWE-693 · Protection Mechanism Failure; CWE-863 · Incorrect Authorization
Published
2026-07-14T21:29Z
EPSS history
Timeline
  • 14 JUL 21:29Z
    Twig: Sandbox `__toString()` policy bypass via `Traversable` in `join` and `replace` filters
    cvelistv5