CVE-2026-84099 Deserialization in wpstorecart
Unauthenticated attackers can inject arbitrary PHP objects via a bundled file, potentially leading to code execution if gadget chains exist.
- 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-2026-84099?
CVE-2026-84099 is a high-severity unsafe deserialization vulnerability in Unknown wpstorecart, published on 12 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The wpstorecart WordPress plugin through 5.0.7 does not prevent direct, unauthenticated access to a bundled add-on that deserializes user-supplied input without restricting the permitted classes, allowing unauthenticated attackers to inject arbitrary PHP objects, which may be escalated further when a suitable gadget chain is present on the site.
Weakness: CWE-502
Which versions are affected by CVE-2026-84099?
How do I fix CVE-2026-84099?
No fix has been published for CVE-2026-84099 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-2026-84099 being exploited?
There is no known exploitation of CVE-2026-84099 in the wild and no public exploit code.
Sources
Also known as GHSA-w3rx-h7m8-2ggf.