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CVE-2026-27473— SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites

Quick assessment

Affected
SPIP SPIP
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.

SPIP是SPIP开源的一个用于创建 Internet 站点的免费软件。 SPIP 4.4.9之前版本存在安全漏洞，该漏洞源于私有联合站点页面上对#URL_SYNDIC输出的清理不当，可能导致存储型跨站脚本攻击。

CVSS 6.4 · Medium EPSS 0.34% · P25
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I. Basic Information for CVE-2026-27473

Vulnerability Information
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Vulnerability Title
SPIP < 4.4.9 Stored Cross-Site Scripting via Syndicated Sites
Source: CVE Program / CVE List V5
Vulnerability Description
SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
SPIP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SPIP是SPIP开源的一个用于创建 Internet 站点的免费软件。 SPIP 4.4.9之前版本存在安全漏洞，该漏洞源于私有联合站点页面上对#URL_SYNDIC输出的清理不当，可能导致存储型跨站脚本攻击。
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
SPIP SPIP 4.4.0 ~ 4.4.9 -

II. Public POCs for CVE-2026-27473

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III. Intelligence Information for CVE-2026-27473

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Same Patch Batch · SPIP · 2026-02-19 · 11 CVEs total

CVE-2025-71243 9.8 CRITICAL SPIP Saisies Plugin < 5.11.1 Remote Code Execution
CVE-2026-27475 8.1 HIGH SPIP < 4.4.9 Insecure Deserialization
CVE-2025-71242 6.5 MEDIUM SPIP < 4.3.6 Authorization Bypass Leading to Content Disclosure
CVE-2026-26223 6.1 MEDIUM SPIP < 4.4.8 Cross-Site Scripting via Iframe Tags in Private Area
CVE-2026-27474 6.1 MEDIUM SPIP < 4.4.9 Cross-Site Scripting in Private Area (Incomplete Fix)
CVE-2025-71241 6.1 MEDIUM SPIP < 4.3.6 Cross-Site Scripting in Private Area
CVE-2025-71244 6.1 MEDIUM SPIP < 4.4.5 Open Redirect via Login Form
CVE-2026-26345 5.4 MEDIUM SPIP < 4.4.8 Cross-Site Scripting in Public Area
CVE-2025-71240 5.4 MEDIUM SPIP < 4.2.15 Cross-Site Scripting via Code Tags
CVE-2026-27472 4.3 MEDIUM SPIP < 4.4.9 Blind Server-Side Request Forgery via Syndicated Sites

IV. Related Vulnerabilities

Same product: SPIP
Same vendor: SPIP

V. Comments for CVE-2026-27473

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