TI-2026-52894 Aliases CVE-2026-75574 GHSA-3625-697m-q29v

Grav before 4.2.2 Remote Code Execution via Email Twig

MEDIUM 41CWE-1336Published 2026-08-25 · Updated 2026-08-27

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-1336.

Summary

The Grav Email plugin (getgrav/grav-plugin-email) before 4.2.2 renders page-editor-controlled Email action parameters as unsandboxed Twig templates. An authenticated remote user with only api.access and api.pages.write permissions can place a Twig expression in header.form.process.email.body, publish the page, and submit the form to execute an arbitrary operating-system command as the account running PHP.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00655 51st percentileScored 2026-11-07

Fix Fixed grav (getgrav): 4.2.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
getgrav	grav	before 4.2.2	4.2.2	Patch available	CNA

grav Vendorgetgrav Affected before 4.2.2 Fixed in 4.2.2 Patch available CNA

Remediation

Fix · CNA grav (getgrav) Fixed in 4.2.2

Timeline

2026-10-02 Threatist record created from CVE-2026-75574
2026-10-03 Alias added: GHSA-3625-697m-q29v
2026-10-13 EPSS moved to the 50th–90th percentile

References

Advisory 1

GitHub Security Advisory (GHSA-gh8j-q67c-j53f)

TI-2026-30893 Grav: Privilege Escalation via Missing Server-Side Validation of groups/access CVSS 3.1CRITICAL 9.4
TI-2025-28971 Cross Site Scripting vulnerability in grav v.1.7.48 and before allows an attacker to… CVSS 3.1CRITICAL 9.8
TI-2021-04523 Unauthenticated Arbitrary YAML Write/Update leads to Code Execution CVSS 3.1CRITICAL 9.8
TI-2026-50940 Grav CMS before 2.0.16 Origin Validation Bypass via Referer CVSS 4.0CRITICAL 9.3
TI-2026-46446 Grav before 2.0.7 Remote Code Execution via Blueprint dynamicData CVSS 4.0CRITICAL 9.3
TI-2021-22428 GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2) CVSS 4.0CRITICAL 9.3

See all 228 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences