Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-103441

Severity CVSS v4.0:
HIGH
Type:
CWE-502 Deserialization of Untrusted Dat
Publication date:
30/09/2026
Last modified:
30/09/2026

Description

Deserialization of untrusted data vulnerability in The Wikimedia Foundation MediaWiki Wikibase extension allows Leverage Executable Code in Non-Executable Files.<br /> <br /> This issue affects MediaWiki Wikibase extension: 1.46, 1.45, and 1.43.

Impact

Vector 4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:I/V:C/RE:M/U:Red CVSS v4.0 Severity and Metrics:

Base Score: 7.20 HIGH
Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:P/S:N/AU:Y/R:I/V:C/RE:M/U:Red

Attack Vector (AV): Network
Attack Complexity (AC): High
Attack Requirements (AT): Present
Privileges Required (PR): Low
User Interaction (UI): Active
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): Low
Confidentiality (SC): High
Integrity (SI): High
Availability (SA): Low
Safety (S): Negligible
Automatable (AU): Yes
Recovery (R): Irrecoverable
Value Density (V): Concentrated
Vulnerability Response Effort (RE): Moderate
Provider Urgency (U): Red
Exploit Maturity (E): POC

Base Score 4.0
7.20
Severity 4.0
HIGH

References to Advisories, Solutions, and Tools