Vulnerability · Published Jun 17, 2026 · Assigned by Wordfence

CVE-2026-12115Counter Box <= 2.0.13 - Authenticated (Administrator+) PHP Object Injection via Import

Medium 6.6

In plain English

A medium-severity unsafe deserialization in Counter Box – Add Countdowns, Timers & Dynamic Counters to WordPress from wpcalc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 3.1)6.6Medium

Exploit odds (30 days)0.5%top 55.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Counter Box – Add Countdowns, Timers & Dynamic Counters to WordPress plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.0.13 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. Deserialization is triggered automatically upon the post-import redirect that renders the list table, and again when any item is opened for editing, requiring no additional navigation beyond the import action itself.

Affected products (as reported)

Vendor	Product	Versions
wpcalc	Counter Box – Add Countdowns, Timers & Dynamic Counters to WordPress	0 – through 2.0.13

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

In plain English

Official description

Affected products (as reported)

References