CVE-2023-49778 CRITICAL

CVE-2023-49778: WordPress Sayfa Sayaç Plugin <= 2.6 is vulnerable to PHP Object Injection

Vendor Hakan Demiray
Product Sayfa Sayac
Weakness CWE-502 · Unsafe deserialization
Published December 21, 2023
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

10.0/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in Hakan Demiray Sayfa Sayac.This issue affects Sayfa Sayac: from n/a through 2.6.

Explanation of Vulnerability in Simple Terms

02Summary

Sayfa Sayac versions 2.6 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary code on the site without user interaction. The vulnerability stems from unsafe handling of serialized data, enabling remote code execution with full system impact. All users should update immediately.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site and take complete control of it.

Potential impact on your site

04Site Impact

Complete compromise of the site, including data theft, malware injection, and service disruption.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

December 21, 2023 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE

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