Read the docs
TI-2026-40338 Aliases CVE-2026-55885GHSA-2f86-9cp8-6hcf

Grav: Admin Backup Zip File Exposes Account Credentials and Configuration Secrets

Priority MEDIUM 63CWE-312Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-312.

Summary

Grav is a file-based Web platform. Prior to 1.7.53, an authenticated administrator with backup permissions can download a ZIP archive containing the full Grav installation root, including user/accounts/admin.yaml with the administrator password hash and user/config with site configuration, through the backup download endpoint protected only by the session-static admin-nonce URL parameter. This issue is reported as fixed in version 1.7.53.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00215 12th percentileScored 2026-11-07
Fix Fixed grav (getgrav): 1.7.53getgrav/grav (Packagist): 1.7.53

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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 1.7.531.7.53Patch availableCNA
—getgrav/grav (Packagist)before 1.7.531.7.53Patch availableGHSA-2f86-9cp8-6hcf
  • grav Vendorgetgrav Affected before 1.7.53 Fixed in 1.7.53 Patch available CNA
  • getgrav/grav (Packagist) Vendor— Affected before 1.7.53 Fixed in 1.7.53 Patch available GHSA-2f86-9cp8-6hcf

Remediation

  • Fix · CNA grav (getgrav) Fixed in 1.7.53
  • Fix · GHSA-2f86-9cp8-6hcf getgrav/grav (Packagist) Fixed in 1.7.53 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55885
  2. 2026-10-03 Alias added: GHSA-2f86-9cp8-6hcf

References

Other 3

  • 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