CVE-2026-42844HIGH 8.8EPSS p25.2%

CVE-2026-42844CVE-2026-42844

Description

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.34% probability of exploitation · percentile 25.2% · 2026-06-19T12:03:05Z
Published2026-05-12
Last modified2026-05-19

Underlying weaknesses· 2

CWE-269CWE-434

References

  1. https://github.com/getgrav/grav/security/advisories/GHSA-6xx2-m8wv-756h
  2. https://github.com/getgrav/grav/security/advisories/GHSA-6xx2-m8wv-756h

2

TypeTargetConfidenceTier
WeaknessImproper Privilege Managementcwe-2690%live
WeaknessUnrestricted Upload of File with Dangerous Typecwe-4340%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-42609
CVE
CVE-2026-42843
CVE
CVE-2026-42613
CVE
CVE-2025-66296
CVE
CVE-2025-66300
CVE
CVE-2025-66295
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.