getgrav 2.0.0-beta.2 YAML File /api/v1/blueprint-upload unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in getgrav grav 2.0.0-beta.2 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /api/v1/blueprint-upload of the component YAML File Handler. Performing a manipulation results in unrestricted upload. This vulnerability is cataloged as CVE-2026-42844. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in getgrav grav 2.0.0-beta.2. This affects an unknown part of the file /api/v1/blueprint-upload of the component YAML File Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-42844 since 04/30/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

Upgrading to version 1.0.0-beta.17 or 2.0.0-beta.2 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: grav 1.0.0-beta.17/2.0.0-beta.2

Timelineinfo

04/30/2026 CVE reserved
05/13/2026 +13 days Advisory disclosed
05/13/2026 +0 days VulDB entry created
05/20/2026 +7 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-6xx2-m8wv-756h
Status: Confirmed

CVE: CVE-2026-42844 (🔒)
GCVE (CVE): GCVE-0-2026-42844
GCVE (VulDB): GCVE-100-363429

Entryinfo

Created: 05/13/2026 06:37
Updated: 05/20/2026 09:57
Changes: 05/13/2026 06:37 (69), 05/20/2026 09:57 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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