CVE-2026-57739 WordPress AcyMailing SMTP Newsletter plugin <= 10.11.0 - SQL Injection vulnerability
Attackers can perform blind SQL injection to read sensitive database information from the AcyMailing SMTP Newsletter plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-57739?
CVE-2026-57739 is a critical SQL injection vulnerability in AcyMailing SMTP Newsletter, published on 13 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in AcyMailing Newsletter Team AcyMailing SMTP Newsletter acymailing allows Blind SQL Injection.This issue affects AcyMailing SMTP Newsletter: from n/a through <= 10.11.0.
Weakness: CWE-89
Which versions are affected by CVE-2026-57739?
How do I fix CVE-2026-57739?
No fix has been published for CVE-2026-57739 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-57739 being exploited?
There is no known exploitation of CVE-2026-57739 in the wild and no public exploit code.
Sources
Also known as GHSA-6x2x-7j2v-5j8c.