Email Subscribers & Newsletters <= 5.9.16 - Authenticated (Administrator+) SQL Injection via 'workflow_ids' Parameter

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Summary

CVECVE-2026-1651
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-04 02:15:53 UTC
Updated2026-04-22 21:26:58 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.000140000 probability, percentile 0.026920000 (date 2026-04-22)

Problem Types: CWE-89 | CWE-89 CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Icegram Email Subscribers Newsletters Email Marketing Post Notifications Newsletter Plugin For WordPress affected 5.9.16 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/changeset/3464881 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/email-subscribers/tags/5.9.15/lite/includes/workflows... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/email-subscribers/trunk/lite/includes/workflows/db/cl... [email protected] plugins.trac.wordpress.org
gist.github.com/stevenyu113228/6c5c3f660e6dc739768842c051028f40 134c704f-9b21-4f2e-91b3-4a467353bcc0 gist.github.com
downloads.wordpress.org/plugin/email-subscribers.5.9.15.zip [email protected] downloads.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/d8dc995d-912e-4d83-84cc-c9924... [email protected] www.wordfence.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Chiao-Lin Yu (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-02-04T18:37:02.000ZVendor Notified
CNA2026-03-03T12:24:57.000ZDisclosed
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