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    CVE-2026-115355

    Mistune before 3.3.0 contains a path traversal vulnerability in the Include directive that allows attackers to read arbitrary files by supplying ../ sequences in include paths. Attackers can also inject HTML through unescaped error messages and included file contents to perform cross-site scripting even when escape=True is set.

    Published:Oct 22, 2026
    Last Modified:Oct 29, 2026
    EPS:Oct 22, 2026
    EPSS Score:0.00461
    CVSS Score:7.5

    Affected Products

    Vendor
    Mistune Project
    Product
    Mistune

    Exploits

    No exploit reference

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High