Spip
CVE-2026-27475
HIGH
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
SPIP before 4.4.9 allows Insecure Deserialization in the public area through the table_valeur filter and the DATA iterator, which accept serialized data. An attacker who can place malicious serialized content (a pre-condition requiring prior access or another vulnerability) can trigger arbitrary object instantiation and potentially achieve code execution. The use of serialized data in these components has been deprecated and will be removed in SPIP 5. This vulnerability is not mitigated by the SPIP security screen.
AnalysisAI
Arbitrary code execution in SPIP before 4.4.9 through insecure deserialization of untrusted serialized objects in the table_valeur filter and DATA iterator. An attacker with prior access or leveraging a separate vulnerability to inject malicious serialized data can trigger arbitrary object instantiation and achieve remote code execution. No patch is currently available, and the vulnerability persists despite SPIP's standard security protections.
Technical ContextAI
Classified as CWE-502 (Deserialization of Untrusted Data). Affects the these component of Spip. SPIP before 4.4.9 allows Insecure Deserialization in the public area through the table_valeur filter and the DATA iterator, which accept serialized data. An attacker who can place malicious serialized content (a pre-condition requiring prior access or another vulnerability) can trigger arbitrary object instantiation and potentially achieve code execution. The use of serialized data in these components has been deprecated and will be removed in SPIP 5. This vulnerability is not mitigated by the S
RemediationAI
Monitor vendor advisories for a patch. 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-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
Leaving vuln.today