Spip
CVE-2026-26345
MEDIUM
Severity by source
AV:N/AC:L/PR:L/UI:R/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 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, including administrators. Successful exploitation can allow attackers to perform actions in the security context of the victim user, including unauthorized modification of application state. This vulnerability is not mitigated by the SPIP security screen.
AnalysisAI
Stored XSS in SPIP before 4.4.8 allows authenticated users with content-editing privileges to inject malicious scripts through inadequate sanitization in the echapper_html_suspect() function, which then execute in the browsers of other users including administrators. Attackers can exploit this vulnerability to perform unauthorized actions and modify application state within the security context of victim users. No patch is currently available.
Technical ContextAI
Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Spip. SPIP before 4.4.8 contains a stored cross-site scripting (XSS) vulnerability in the public area triggered in certain edge-case usage patterns. The echapper_html_suspect() function does not adequately sanitize user-controlled content, allowing authenticated users with content-editing privileges (e.g., author-level roles and above) to inject malicious scripts. The injected payload may be rendered across multiple pages within the framework and execute in the browser context of other users, includin
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
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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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