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Grav Flex-Objects EUVDEUVD-2026-45081

| CVE-2026-62235 LOW
Missing Authorization (CWE-862)
2026-07-17 VulnCheck GHSA-gv8p-326f-p8gj
Authentication Bypass Grav
2.3
CVSS 4.0 · Vendor: VulnCheck

Severity by source

Vendor (VulnCheck) PRIMARY
2.3 LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
5.0 MEDIUM

AC:H reflects the AT:P condition (permission-less directories must exist); PR:L reflects mandatory api.access authentication; no scope change applies.

3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

2
Patch available
Jul 17, 2026 - 02:32 EUVD
Analysis Generated
Jul 17, 2026 - 01:02 vuln.today

DescriptionCVE.org

Grav Flex-Objects before version 1.4.3 contains a broken access control vulnerability in the admin-next REST API that allows authenticated users with only api.access permission to perform unauthorized CRUD operations on permission-less directories. Attackers with api.access credentials can create, read, update, delete, and export objects from any directory lacking an explicit permissions configuration, bypassing intended authorization controls.

AnalysisAI

Broken access control in Grav Flex-Objects before 1.4.3 permits authenticated users holding only the api.access permission to perform full CRUD operations on directories lacking explicit permission configurations via the admin-next REST API. The vulnerability bypasses intended authorization controls (CWE-862) because the REST API fails to enforce object-level permission checks when no explicit policy is defined for a directory. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain api.access credentials
Delivery
Enumerate Flex-Objects directories via REST API
Exploit
Identify permission-less directories (AT:P condition)
Execution
Issue unauthorized CRUD/export requests
Impact
Exfiltrate or manipulate CMS object data
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Vulnerability AssessmentAI

Exploitation Exploitation requires two simultaneous conditions: (1) the attacker must possess valid credentials with at minimum the api.access permission - unauthenticated exploitation is not possible (PR:L in CVSS 4.0); and (2) the target Grav installation must contain one or more Flex-Objects directories that lack an explicit permissions configuration (the AT:P attack requirement). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 2.3 (Low) reflects a narrow-impact, conditionally exploitable flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained valid api.access credentials - for example, through credential reuse, a compromised API token, or a low-privilege account provisioned for integration purposes - sends crafted REST API requests to the admin-next endpoint targeting directories that have no explicit permission policy defined. Because no authorization check is enforced for those directories, the attacker can enumerate, read, create, update, delete, or export Flex-Objects content they are not intended to access. …
Remediation Upgrade Grav Flex-Objects to version 1.4.3 or later, which is the vendor-released patch as confirmed by the GitHub security advisory at https://github.com/getgrav/grav/security/advisories/GHSA-23vq-365v-qcmh. … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-45081 vulnerability details – vuln.today
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