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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-72831 Detail

Description

The Flex Objects plugin (through 1.4.6, tested with Grav 2.0.11) contains an incorrect authorization vulnerability in its Flex Objects API. FlexApiController::update() checks only the general Flex directory permission and does not apply the additional target/field/super-admin checks enforced by the dedicated Users and Groups API controllers. An authenticated account with api.access, admin.login, and users.update permissions (but without api.users.write or admin.super) can use the generic /api/v1/flex-objects/user-accounts endpoint to change a super administrator's password, or the /api/v1/flex-objects/user-groups endpoint to grant its group admin.super, resulting in full site takeover. Fixed in Flex Objects 1.4.7.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 8.7 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/getgrav/grav/commit/0b384f5b0e73b1ad9dd29c70185407895ea3b09f VulnCheck
https://github.com/getgrav/grav/commit/8071c10bc3a4743a4b8cf003dfb1644d6680c2ea VulnCheck
https://github.com/getgrav/grav/commit/a0bf26f7e5d7a98894b7cd2b8c5afe419b264e53 VulnCheck
https://github.com/getgrav/grav/commit/ad9709f865b09b68798fb1ac375b484a8cc1d892 VulnCheck
https://github.com/getgrav/grav/security/advisories/GHSA-pc8m-jxvh-vmrc VulnCheck
https://www.vulncheck.com/advisories/grav-through-authentication-bypass-via-flex-objects VulnCheck

Weakness Enumeration

CWE-ID CWE Name Source
CWE-863 Incorrect Authorization VulnCheck  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-72831
NVD Published Date:
08/14/2026
NVD Last Modified:
08/14/2026
Source:
VulnCheck