MailChimp Campaigns Plugin up to 3.2.4 on WordPress mailchimp_campaigns_manager_disconnect_app authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in MailChimp Campaigns Plugin up to 3.2.4 on WordPress. This issue affects the function mailchimp_campaigns_manager_disconnect_app. The manipulation leads to authorization. This vulnerability is referenced as CVE-2026-1303. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in MailChimp Campaigns Plugin up to 3.2.4 on WordPress and classified as problematic. This issue affects the function mailchimp_campaigns_manager_disconnect_app. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is availability. The summary by CVE is:

The MailChimp Campaigns plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.2.4. This is due to missing capability checks on the `mailchimp_campaigns_manager_disconnect_app` function that is hooked to the AJAX action of the same name. This makes it possible for authenticated attackers, with Subscriber-level access and above, to disconnect the site from its MailChimp synchronization app, disrupting automated email campaigns and marketing integrations.

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-1303. The exploitation is known to be easy. The attack may be initiated remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/19/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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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

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/13/2026 Advisory disclosed
02/13/2026 +0 days VulDB entry created
02/19/2026 +6 days VulDB entry last update

Sourcesinfo

Advisory: wordfence.com
Status: Not defined

CVE: CVE-2026-1303 (🔒)
GCVE (CVE): GCVE-0-2026-1303
GCVE (VulDB): GCVE-100-345965

Entryinfo

Created: 02/13/2026 23:23
Updated: 02/19/2026 04:31
Changes: 02/13/2026 23:23 (50), 02/14/2026 14:45 (12), 02/19/2026 04:31 (1)
Complete: 🔍
Cache ID: 216::103

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