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TI-2024-18528 Aliases CVE-2024-27923GHSA-f6g2-h7qv-3m5v

Remote Code Execution by uploading a phar file using frontmatter

Priority HIGH 73CWE-287Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287 and CWE-434.

Summary

Grav is a content management system (CMS). Prior to version 1.7.43, users who may write a page may use the `frontmatter` feature due to insufficient permission validation and inadequate file name validation. This may lead to remote code execution. Version 1.7.43 fixes this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01357 71st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed grav (getgrav): 1.7.43getgrav/grav (Packagist): 1.7.43

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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

VendorProductAffected versionsFixed inStatusSource
getgravgravbefore 1.7.431.7.43Patch availableCNA
—getgrav/grav (Packagist)before 1.7.431.7.43Patch availableGHSA-f6g2-h7qv-3m5v
  • grav Vendorgetgrav Affected before 1.7.43 Fixed in 1.7.43 Patch available CNA
  • getgrav/grav (Packagist) Vendor— Affected before 1.7.43 Fixed in 1.7.43 Patch available GHSA-f6g2-h7qv-3m5v

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*before 1.7.43Vulnerablegetgrav
  • cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:* Versions before 1.7.43 Vulnerable ·getgrav

Remediation

  • Fix · CNA grav (getgrav) Fixed in 1.7.43
  • Fix · GHSA-f6g2-h7qv-3m5v getgrav/grav (Packagist) Fixed in 1.7.43 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-27923
  2. 2026-10-03 Alias added: GHSA-f6g2-h7qv-3m5v

References

Exploit 1

Patch 1

Other 1

  • 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-2021-22428 GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2) CVSS 4.0CRITICAL 9.3
  • TI-2025-41064 In grav <1.7.49.5, a SSRF (Server-Side Request Forgery) vector may be triggered via Twig… CVSS 3.1CRITICAL 9.1
  • TI-2026-30888 Grav: Unauthenticated Path Traversal & Arbitrary File Write in FormFlash component. CVSS 4.0HIGH 8.8
  • TI-2025-40773 Security Sandbox Bypass with SSTI (Server Side Template Injection) in the Grav CMS CVSS 3.1HIGH 8.8
  • TI-2025-40768 Grav is vulnerable to RCE via SSTI through Twig Sandbox Bypass CVSS 4.0HIGH 8.7
See all 56 →

Sources

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