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Missing authorization in Grav Data Manager lets attackers delete data files

Priority LOW 36CWE-862Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

The Grav Data Manager plugin from 1.4.0 through 1.4.5 has a missing authorization check (CWE-862) in its classic Admin integration. An unauthenticated remote attacker can send a request with the delete parameter, a known data type and a filename to remove stored data files under user/data/, including form submissions. Forged requests that lack CSRF nonce checks are also accepted.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Grav Data Manager plugin 1.4.0 through 1.4.5 contains a missing authorization vulnerability that allows unauthenticated attackers to delete stored data files via the classic Admin integration. Attackers can send a request with the delete parameter and known data type and filename to remove files under user/data/, including form submissions, or forge requests lacking CSRF nonce checks.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00271 19th percentileScored 2026-11-07
Fix Fixed grav-plugin-data-manager (getgrav): 1.4.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
getgravgrav-plugin-data-manager1.4.0 to before 1.4.61.4.6Patch availableCNA
  • grav-plugin-data-manager Vendorgetgrav Affected 1.4.0 to before 1.4.6 Fixed in 1.4.6 Patch available CNA

Remediation

Update grav-plugin-data-manager to version 1.4.6, which is the fixed version for the affected 1.4.0 through 1.4.5 range.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA grav-plugin-data-manager (getgrav) Fixed in 1.4.6

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-109316
  2. 2026-10-12 Alias added: GHSA-43jm-rfw2-wchv
  3. 2026-10-13 Priority changed: MEDIUM → LOW
  4. 2026-10-18 CISA SSVC decision points changed

References

  • 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