CVE-2026-0677 WordPress TotalContest Lite plugin <= 2.9.1 - PHP Object Injection vulnerability
An attacker can exploit PHP object injection in the TotalContest Lite plugin to potentially execute arbitrary code on the WordPress site.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-0677?
CVE-2026-0677 is a medium-severity unsafe deserialization vulnerability in TotalSuite TotalContest Lite, published on 20 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Deserialization of Untrusted Data vulnerability in TotalSuite TotalContest Lite totalcontest-lite allows Object Injection.This issue affects TotalContest Lite: from n/a through <= 2.9.1.
Weakness: CWE-502
Which versions are affected by CVE-2026-0677?
How do I fix CVE-2026-0677?
No fix has been published for CVE-2026-0677 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-2026-0677 being exploited?
There is no known exploitation of CVE-2026-0677 in the wild and no public exploit code.
Sources
Also known as GHSA-c4qv-frh3-43c3.