CVE-2026-57770 CRITICAL

CVE-2026-57770: WordPress Grand Photography theme <= 5.7.8 - PHP Object Injection vulnerability

Vendor Themegoods

Product Grand Photography

Weakness CWE-502 · Unsafe deserialization

Published July 13, 2026

Last update July 13, 2026

View on NVD All CVEs

CVSS base score

9.8/10

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:U/C:H/I:H/A:H

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in ThemeGoods Grand Photography grandphotography allows Object Injection.This issue affects Grand Photography: from n/a through <= 5.7.8.

Explanation of Vulnerability in Simple Terms

02Summary

Grand Photography versions 5.7.8 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary code on affected sites. The vulnerability requires no user interaction and can be exploited remotely over the network. Sites running this product should update immediately to a patched version.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site without authentication.

Potential impact on your site

04Site Impact

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

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

July 13, 2026 CVE published

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-57770 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html AskarLabs — CWE-502 write-up Deserialization of Untrusted Data

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