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CVE-2026-65646

Quick assessment

Affected
WebPros Plesk
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.

Plesk 中由于未能正确中和（处理）特殊元素，允许经过身份验证的远程用户泄露任意本地文件并提升权限。

CVSS 8.7 · High
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I. Basic Information for CVE-2026-65646

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper neutralization of special elements in Plesk allows remote authenticated users to disclose arbitrary local files and escalate privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WebPros Plesk 0 ~ 18.0.79.8 -

II. Public POCs for CVE-2026-65646

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III. Intelligence Information for CVE-2026-65646

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Vendor Pages for CVE-2026-65646 (1)

Same Patch Batch · WebPros · 2026-08-26 · 3 CVEs total

CVE-2026-65647 8.7 HIGH Plesk 符号链接解析缺陷致 Root 远程代码执行
CVE-2026-65642 8.6 HIGH Plesk 18.0.79.7及18.0.80.3前存在IDOR漏洞

IV. Related Vulnerabilities

Same product: Plesk
Same vendor: WebPros
Same weakness: CWE-74

V. Comments for CVE-2026-65646

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