What is the CVSS score of CVE-2026-27474?

CVE-2026-27474 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Spip are affected by CVE-2026-27474?

Organizations using SPIP before 4.4.9 should be aware of moderate risk from CVE-2026-27474, a cross-site scripting vulnerability rated CVSS 6.1.

How to fix or mitigate CVE-2026-27474?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Spip CVE-2026-27474

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-02-19 disclosure@vulncheck.com

XSS Spip

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:03 vuln.today

CVE Published

Feb 19, 2026 - 19:22 nvd

MEDIUM 6.1

DescriptionCVE.org

SPIP before 4.4.9 allows Cross-Site Scripting (XSS) in the private area, complementing an incomplete fix from SPIP 4.4.8. The echappe_anti_xss() function was not systematically applied to input, form, button, and anchor (a) HTML tags, allowing an attacker to inject malicious scripts through these elements. This vulnerability is not mitigated by the SPIP security screen.

AnalysisAI

Reflected XSS in SPIP versions before 4.4.9 permits attackers to execute arbitrary scripts in the private area through insufficiently sanitized input, form, button, and anchor HTML tags. An unauthenticated attacker can craft malicious payloads that bypass the incomplete anti-XSS protection introduced in version 4.4.8, affecting all SPIP installations without the patch.

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Vulnerability AssessmentAI

Risk Assessment	CVSS 6.1 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker could exploit this vulnerability to compromise the affected system.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-27474 vulnerability details – vuln.today

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