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

Quick assessment

Affected
ThemeGoods Grand Photography
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Grand Photography是WordPress基金会的一款专为摄影师和创意设计师打造的响应式极简 WordPress 主题，内置 80+ 相册模板、WooCommerce 在线售图、客户选片校对及一键导入演示等强大功能。 WordPress Grand Photography 5.7.8及之前版本存在反序列化注入漏洞，该漏洞源于对不受信任数据反序列化，可能导致对象注入。

CVSS 9.8 · Critical EPSS 0.56% · P47

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
ThemeGoods Grand Photography ≤ 5.7.8 affected
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I. Basic Information for CVE-2026-57770

Vulnerability Information
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Vulnerability Title
WordPress Grand Photography theme <= 5.7.8 - PHP Object Injection vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Grand Photography 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Grand Photography是WordPress基金会的一款专为摄影师和创意设计师打造的响应式极简 WordPress 主题，内置 80+ 相册模板、WooCommerce 在线售图、客户选片校对及一键导入演示等强大功能。 WordPress Grand Photography 5.7.8及之前版本存在反序列化注入漏洞，该漏洞源于对不受信任数据反序列化，可能导致对象注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ThemeGoods Grand Photography 0 ~ 5.7.8 -

II. Public POCs for CVE-2026-57770

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III. Intelligence Information for CVE-2026-57770

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Other References for CVE-2026-57770 (1)

IV. Related Vulnerabilities

Same product: Grand Photography
Same vendor: ThemeGoods
Same weakness: CWE-502