⚠ Reference material — not professional advice. Test in staging, back up first, verify against your specific version. Use your own judgment for your environment.
● Medium · CVSS 4.9

How to Fix CVE-2026-1258: SQL Injection in Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails

Other vulnerabilities in the same area that are worth patching alongside this one:

*By Sai Kiran Pandrala*

⚡ At a glance
SeverityCVSS 4.9 - Medium
Actively exploited?Not currently listed in CISA KEV
Affected0 <= 1.19.2
Fixed inSee vendor advisory
Type (CWE)CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

What is CVE-2026-1258?

CVE-2026-1258 is a SQL injection flaw in Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails. User input reaches a database query without proper parameterization, letting an attacker read, modify, or in some cases execute commands through stacked queries or out-of-band channels. Vendor description: The Mail Mint plugin for WordPress is vulnerable to blind SQL Injection via the 'forms', 'automation', 'email/templates', and 'contacts/import/tutorlms/map' API endpoints in all versions up to, and including, 1.19.2 . This is due to insufficient escaping on the user supplied 'order-by', 'order-type', and 'selectedCourses' parameters and lack of sufficient preparation on the existing SQL queries.

Why this CVE matters

SQL injection against a management product is rarely just a data leak. Once an attacker can read or write to the application database, the chain commonly ends with credential theft, persistence via scheduled tasks, or stacked queries that pivot into the operating system.

For deployments of Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails that have been exposed to the public internet during the disclosure window, the operating assumption should be that scanning has already happened. Even where exploitation has not been publicly observed, scanning for the vulnerable fingerprint is cheap and routine. Patching closes the door; log review and credential rotation close out the rest of the response.

Am I affected?

You are affected if your installation matches any of these version ranges:

Check your installed version against the list above. If you cannot determine the version, treat the system as affected and follow the upgrade path below.

Open Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails's About dialog or run the vendor-documented version-check command. Compare the result against the affected ranges in the advisory.

How to fix CVE-2026-1258

The fix is to apply the patched build listed in the getwpfunnels advisory.

Affected versions confirmed in the CVE record:

Update the affected WordPress plugin / theme


<!-- enrich_agent_2:v1 -->
# Pin to the patched build listed in the [advisory](https://www.wordfence.com/threat-intel/vulnerabilities/id/dfb59bca-0653-4e75-8da1-e78e5d659422?source=cve).
# WP-CLI on the server.
wp plugin update mail-mint-email-marketing-newsletter-email-automation-woocommerce-emails 

# If you cannot patch right now, deactivate the plugin.
wp plugin deactivate mail-mint-email-marketing-newsletter-email-automation-woocommerce-emails

# Verify the running plugin version.
wp plugin get mail-mint-email-marketing-newsletter-email-automation-woocommerce-emails --field=version

Verify the fix worked


<!-- enrich_agent_2:v1 -->
# 1. Confirm the running version matches the fixed-in version from the advisory.
#    Cross-check against the vendor advisory: https://www.wordfence.com/threat-intel/vulnerabilities/id/dfb59bca-0653-4e75-8da1-e78e5d659422?source=cve

# 2. Re-scan with your vulnerability scanner. The scanner should no longer flag
#    this CVE on the patched host.
# Example with Nmap NSE:
nmap -sV --script vuln <target-host>

# 3. Inspect the service / kernel logs for crash-loops or rollback events in
#    the first hour after the upgrade.
journalctl -u <service-name> --since "1 hour ago"
dmesg --since "1 hour ago"

If you cannot patch immediately

Front the affected endpoint with a WAF rule that blocks SQL metacharacters in the vulnerable parameters. This is a stopgap, not a fix. Patch promptly.

How to verify the fix worked

If your installation was internet-reachable during the disclosure window, treat log review as part of the remediation rather than an optional follow-up. Look for unexpected administrator accounts in Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails, scheduled tasks or cron jobs you did not create, new files in web-accessible directories, and outbound connections to addresses not in your baseline. Suspicious requests to the vulnerable endpoint immediately followed by successful 200-class responses with unusually large bodies are a strong indicator of exploitation.

Frequently asked questions

Is CVE-2026-1258 being exploited in the wild?

Public exploitation has not been confirmed by CISA at the time of writing. Treat the patch as time-sensitive anyway; reports often lag actual abuse.

Will a WAF or IDS rule fully mitigate CVE-2026-1258?

No. Network-layer filters can reduce noise and slow opportunistic scanners, but they will not stop a determined attacker. The vendor patch is the only durable fix.

Do I need to assume compromise if my Mail Mint – Email Marketing, Newsletter, Email Automation & WooCommerce Emails was internet-facing and unpatched?

For an unauthenticated RCE-class flaw exposed to the public internet during the known exploitation window, yes. Review logs, rotate credentials the process could access, and look for unexpected accounts, scheduled tasks, or outbound connections.

References

*This guide was assembled from the official vendor advisory, the NVD record, and the CISA KEV catalog entry on 2026-05-25. Always confirm against the vendor advisory before applying changes in production.*