CVE-2026-42844

Summary

Grav is a file-based Web platform. In Grav 2.0.0-beta.2, a low-privileged authenticated API user with api.media.write can abuse /api/v1/blueprint-upload to write an arbitrary YAML file into user/accounts/, then log in as the newly created account with api.super privileges. This results in full administrative compromise of the Grav API. This vulnerability is fixed in API 1.0.0-beta.17.

Affected Software

VendorProductVersion RangeStatus
getgravgrav2.0.0-beta.2affected

Weaknesses

  • CWE-434: CWE-434: Unrestricted Upload of File with Dangerous Type
  • CWE-269: CWE-269: Improper Privilege Management

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: total

Additional References

References