Security readout for executives and security teams
Plain-English summary
This affects the Icegram Express Email Subscribers WordPress plugin up to version 5.9.16. A logged-in administrator could abuse a plugin workflow parameter to query or alter database data. The business risk is mainly from malicious insiders or already-compromised administrator accounts, not anonymous internet attackers.
Executive priority
Treat as a prioritized maintenance issue for affected WordPress sites, especially public-facing or business-critical sites. It is not currently supported as an emergency internet-wide threat, but compromised admin accounts could turn it into sensitive data exposure or data manipulation.
Technical view
CVE-2026-1651 is an authenticated Administrator+ SQL injection in the plugin’s workflow handling through the workflow_ids parameter. The issue is attributed to insufficient escaping and query preparation. CVSS 3.1 is 6.5, with high confidentiality and integrity impact, high privileges required, no user interaction, and no availability impact.
Likely exposure
Exposure is limited to WordPress sites using Email Subscribers by Icegram Express versions up to and including 5.9.16. Exploitation requires administrator-level access or higher, so risk increases where admin accounts are shared, weakly protected, or already compromised.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. A public researcher reference is included, so defenders should assume technical details may be available, but this is not evidence of exploitation in the wild.
Researcher notes
The vulnerable area is identified in class-es-db-workflows.php around workflow database handling, with WordPress Trac references for trunk, version 5.9.15, and changeset 3464881. Avoid assuming a fixed release number unless confirmed from vendor or plugin repository metadata.
Mitigation direction
- Inventory WordPress sites using the Email Subscribers by Icegram Express plugin.
- Identify plugin versions up to and including 5.9.16.
- Update according to the vendor or WordPress plugin guidance.
- Review administrator accounts for unnecessary access and weak authentication.
- Monitor database and WordPress admin activity for unusual workflow-related changes.
Validation and detection
- Check installed plugin name and version in WordPress administration or asset inventory.
- Confirm whether the installed version is later than 5.9.16.
- Review vendor changelog or WordPress Trac changeset 3464881 for remediation confirmation.
- Audit administrator users, recent logins, and unexpected plugin workflow changes.
- Check security tooling for alerts referencing CVE-2026-1651 or Wordfence ID d8dc995d.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-1651 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N1.25.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d8dc995d-912e-4d83-84cc-c99242022b82?source=cveCVE reference
- https://downloads.wordpress.org/plugin/email-subscribers.5.9.15.zipCVE reference
- https://plugins.trac.wordpress.org/browser/email-subscribers/trunk/lite/includes/workflows/db/class-es-db-workflows.php#L379CVE reference
- https://plugins.trac.wordpress.org/browser/email-subscribers/tags/5.9.15/lite/includes/workflows/db/class-es-db-workflows.php#L379CVE reference
- https://gist.github.com/stevenyu113228/6c5c3f660e6dc739768842c051028f40CVE reference
- https://plugins.trac.wordpress.org/changeset/3464881/CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.