Vulnerability · Published Jul 13, 2026 · Assigned by Patchstack
CVE-2026-57744WordPress RT-Theme 18 | Extensions plugin <= 2.5 - PHP Object Injection vulnerability
Critical 9.8
In plain English
A critical-severity unsafe deserialization in RT-Theme 18 | Extensions from stmcan. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.6%top 53.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Deserialization of Untrusted Data vulnerability in stmcan RT-Theme 18 | Extensions rt18-extensions allows Object Injection.This issue affects RT-Theme 18 | Extensions: from n/a through <= 2.5.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| stmcan | RT-Theme 18 | Extensions | 0 – through 2.5 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H