CVE-2026-42844Disclosure(getgrav / grav)

LOWCVSS 8.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-269CWE-434

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • grav

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
Products
grav

1 version affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-05-12: 1Technical Details · 2026-05-12: 105-12
Signal classification1 categories
Disclosure
1100.0%
Referenced assets2 URLs
By indicator
Full discourse1 post
  • CVE@CVEnew
    Disclosure

    CVE-2026-42844 Grav is a file-based Web platform. In Grav 2.0.0-beta.2, a low-privileged authenticated API user with http://api.media.write can abuse /api/v1/blueprint-upload to write an a… https://www.cve.org/CVERecord?id=CVE-2026-42844

    Post summary

    The post announces a new CVE for Grav 2.0.0-beta.2, detailing how a low-privileged authenticated user can write arbitrary data via the /api/v1/blueprint-upload endpoint.

    0000053
    57.5K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appgetgravgrav2.0.0--

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