Icegram Express Email Subscribers Plugin up to 5.9.16 on WordPress workflow_ids sql injection

Summaryinfo

A vulnerability labeled as critical has been found in Icegram Express Email Subscribers Plugin up to 5.9.16 on WordPress. Impacted is an unknown function. The manipulation of the argument workflow_ids results in sql injection. This vulnerability is known as CVE-2026-1651. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Icegram Express Email Subscribers Plugin up to 5.9.16 on WordPress. It has been classified as critical. Affected is an unknown part. The manipulation of the argument workflow_ids with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The Email Subscribers by Icegram Express plugin for WordPress is vulnerable to SQL Injection via the 'workflow_ids' parameter in all versions up to, and including, 5.9.16 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-1651. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation requires an enhanced level of successful authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/05/2026). The MITRE ATT&CK project declares the attack technique as T1505.

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

The vulnerability is also documented in the databases at CNNVD (CNNVD-202603-582) and EUVD (EUVD-2026-9350). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Icegram Express

Name

• Email Subscribers Plugin

Version

• 5.9.0
• 5.9.1
• 5.9.2
• 5.9.3
• 5.9.4
• 5.9.5
• 5.9.6
• 5.9.7
• 5.9.8
• 5.9.9
• 5.9.10
• 5.9.11
• 5.9.12
• 5.9.13
• 5.9.14
• 5.9.15
• 5.9.16

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

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• 🔒

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Once again VulDB remains the best source for vulnerability data.

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