Spip
CVE-2026-26223
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
SPIP before 4.4.8 allows cross-site scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.
AnalysisAI
Improper iframe sanitization in SPIP before 4.4.8 enables stored cross-site scripting attacks within the private administrative area, allowing attackers to execute arbitrary JavaScript in the context of backend users. An unauthenticated attacker can inject malicious iframe tags that bypass the application's security filters and execute in victims' browsers when they access the affected area. No patch is currently available and the built-in SPIP security screen does not mitigate this vulnerability.
Technical ContextAI
Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Spip. SPIP before 4.4.8 allows cross-site scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.
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 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
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
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
SPIP v4.1.5 and earlier was discovered to contain a SQL injection vulnerability via the _oups parameter. Rated critical
Cross-site request forgery (CSRF) vulnerability in ecrire/exec/valider_xml.php in SPIP 3.1.2 and earlier allows remote a
RCE in SPIP 3.1.13 through 4.1.2 allows remote authenticated users to execute arbitrary code via the _oups parameter. Ra
Spip Web Framework v3.1.13 and below was discovered to contain multiple SQL injection vulnerabilities at /ecrire via the
A PHP injection vulnerability in Spip before v3.2.8 allows attackers to execute arbitrary PHP code via the _oups paramet
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
Leaving vuln.today