CVE-2026-81571 - Vulnerability Details - OpenCVE

The Brave WordPress plugin before 0.8.8 does not prevent a URL parameter used to pre-fill a form field from being passed to WordPress's shortcode engine, allowing unauthenticated attackers to have arbitrary shortcodes registered on the site executed server-side.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Unknown

Brave

unaffected

Version	Status	Constraints
`0`	affected	< 0.8.8

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://wpscan.com/vulnerability/049d0bfc-962b-4f5b-a089-c45f4ad981e3/

History

Wed, 02 Sep 2026 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Wed, 02 Sep 2026 10:45:00 +0000

Type	Values Removed	Values Added
Description		The Brave WordPress plugin before 0.8.8 does not prevent a URL parameter used to pre-fill a form field from being passed to WordPress's shortcode engine, allowing unauthenticated attackers to have arbitrary shortcodes registered on the site executed server-side.
Title		Brave Popup Builder < 0.8.8 - Unauthenticated Arbitrary Shortcode Execution via UTM Parameter
Weaknesses		CWE-74
References		https://wpscan.com/vulnerability/049d0bfc-962b-4f5b-a089-c45f4ad981e3/
Metrics		cvssV3_1 `{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2026-09-02T14:16:52.727Z

Updated: 2026-09-02T14:57:37.122Z

Reserved: 2026-08-27T06:56:20.875Z

Link: CVE-2026-81571

Vulnrichment

Updated: 2026-09-02T14:43:45.753Z

NVD

Status : Received

Published: 2026-09-02T15:17:42.917

Modified: 2026-09-02T15:17:42.917

Link: CVE-2026-81571

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-74

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