# CVE-2026-1651: Email Subscribers & Newsletters <= 5.9.16 - Authenticated (Administrator+) SQL Injection via 'workflow_ids' Parameter

> Authenticated administrators can exploit SQL injection in the Email Subscribers plugin to extract sensitive database information.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Mar 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-76q7-99r5-rqcr

## What is CVE-2026-1651?

CVE-2026-1651 is a medium-severity SQL injection vulnerability in icegram Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress, published on 4 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

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.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-1651?


## How do I fix CVE-2026-1651?

No fix has been published for CVE-2026-1651 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1651 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1651 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1651 and fix it if it is affected.

What it is: CVE-2026-1651 is a medium-severity SQL injection vulnerability in icegram Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress, published on 4 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1651 exists.

Affected product: icegram Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-1651/ (Markdown: https://insights.sbomify.com/CVE-2026-1651/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1651
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1651
- OSV: https://osv.dev/vulnerability/CVE-2026-1651

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-1651/
Summaries are generated and may contain mistakes; the official description above is the record.