CVE-2026-39498 WordPress YayMail plugin <= 4.3.3 - PHP Object Injection vulnerability
A PHP object injection vulnerability in the YayMail WordPress plugin allows attackers to potentially execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39498?
CVE-2026-39498 is a high-severity unsafe deserialization vulnerability in Yeeaddons YayMail, published on 15 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Shop manager PHP Object Injection in YayMail <= 4.3.3 versions.
Weakness: CWE-502
Which versions are affected by CVE-2026-39498?
How do I fix CVE-2026-39498?
No fix has been published for CVE-2026-39498 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-39498 being exploited?
There is no known exploitation of CVE-2026-39498 in the wild and no public exploit code.
Sources
Also known as GHSA-h674-wp7j-pj7m.