CVE Tools
Sign in

CVE-2026-48807

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

Published: Jul 14, 2026Updated: Jul 17, 2026 Sources: CVE List NVDCWE-693
9.1CRITICAL
NVD MITRE
EPSS Score
0.2%
Top 88.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-693CWE-863

Affected Products

twigphp
oss-projectaka twig
TwigLibrary
OSS Libraries / web-framework
symfony
oss-projectaka twig (related), symfony framework
twigLibrary
OSS Libraries / web-framework

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-48807?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/twigphp/Twig/security/advisories/GHSA-8x9c-rmqh-456c
github.com
https://github.com/twigphp/Twig/releases/tag/v3.27.0
github.com

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-48807 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows