High 7.1Published Jul 14, 2026

CVE-2026-48807Twig: Sandbox `__toString()` policy bypass via `Traversable` in `join` and `replace` filters

Updated under an hour ago (Oct 27, 2026, 2:00 AM ET)

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It affects twigphp Twig and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for twigphp Twig

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-693, CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

twigphp Twig twigphp:twig (from the name)	before 3.27.0	CNA record
symfony twig symfony:twig	before 3.27.0	NVD

References

References

https://github.com/twigphp/Twig/security/advisories/GHSA-8x9c-rmqh-456c	x-refsource-confirm, vendor-advisory
https://github.com/twigphp/Twig/releases/tag/v3.27.0	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.