Spip
CVE-2026-27473
MEDIUM
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Stored XSS in SPIP before 4.4.9 allows authenticated attackers to inject malicious scripts through syndicated site URLs that execute in the private administrative area when other admins view syndication details. An attacker with the ability to configure a malicious syndication feed can achieve persistent code execution affecting other administrators. No patch is currently available for this vulnerability.
Technical ContextAI
Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Spip. 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.
RemediationAI
Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.
The Saisies plugin for SPIP CMS versions 5.4.0 through 5.11.0 contains a critical remote code execution vulnerability. A
The Security Screen (_core_/securite/ecran_securite.php) before 1.1.8 for SPIP, as used in SPIP 3.0.x before 3.0.12, all
Cross-site scripting (XSS) vulnerability in valider_xml.php in SPIP 3.1.2 and earlier allows remote attackers to inject
Directory traversal vulnerability in ecrire/exec/valider_xml.php in SPIP 3.1.2 and earlier allows remote attackers to en
The SPIP template composer/compiler in SPIP 3.1.2 and earlier allows remote authenticated users to execute arbitrary PHP
Remote code execution in SPIP before 4.4.20 allows unauthenticated attackers to run arbitrary PHP on the server by explo
SPIP before 4.3.2, 4.2.16, and 4.1.18 is vulnerable to a command injection issue. Rated critical severity (CVSS 9.8), th
SPIP before 4.2.1 allows Remote Code Execution via form values in the public area because serialization is mishandled. R
Remote code execution in SPIP CMS versions prior to 4.4.21 lets unauthenticated attackers run arbitrary PHP/OS commands
SPIP 3.0.x before 3.0.9, 2.1.x before 2.1.22, and 2.0.x before 2.0.23 allows remote attackers to gain privileges and "ta
Unauthenticated SQL injection in SPIP referer_spam plugin before 1.3.0 via the referrer tracking functionality. PoC and
SPIP v4.1.5 and earlier was discovered to contain a SQL injection vulnerability via the _oups parameter. Rated critical
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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