CMB2 Plugin up to 2.12.x on WordPress AJAX Actions authorization

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.49+

Summaryinfo

A vulnerability described as problematic has been identified in CMB2 Plugin up to 2.12.x. Affected by this vulnerability is an unknown functionality of the component AJAX Actions. Executing a manipulation can lead to authorization. This vulnerability appears as CVE-2026-80338. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in CMB2 Plugin up to 2.12.x and classified as problematic. This vulnerability affects an unknown code block of the component AJAX Actions. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect integrity, and availability. CVE summarizes:

The CMB2 WordPress plugin before 2.13.0 does not perform any capability check on one of its AJAX actions, allowing users with a role as low as Subscriber to create arbitrary WordPress options and corrupt existing ones, which can break core site settings and take the site offline. Exploitation requires the site's or another CMB2 WordPress plugin before 2.13.0 to have declared an oEmbed field, as the CMB2 WordPress plugin before 2.13.0 registers none of its own. The stored value is never attacker-controlled, so the issue does not lead to privilege escalation.

The advisory is shared for download at wpscan.com. This vulnerability was named CVE-2026-80338 since 08/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 2.13.0 eliminates this vulnerability.

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Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
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: CMB2 Plugin 2.13.0

Timelineinfo

08/26/2026 CVE reserved
09/24/2026 +29 days Advisory disclosed
09/24/2026 +0 days VulDB entry created
09/24/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: wpscan.com
Status: Confirmed

CVE: CVE-2026-80338 (🔒)
GCVE (CVE): GCVE-0-2026-80338
GCVE (VulDB): GCVE-100-409288

Entryinfo

Created: 09/24/2026 08:34
Changes: 09/24/2026 08:34 (55)
Complete: 🔍
Cache ID: 216::103

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