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    Dashboard / CVE / CVE-2026-40890

    CVE-2026-40890

    The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as HTML. Processing a malformed input containing a < character that is not followed by a > character anywhere in the remaining text with a SmartypantsRenderer will lead to Out of Bounds read or a panic. This vulnerability is fixed with commit 759bbc3e32073c3bc4e25969c132fc520eda2778.

    Published:Apr 21, 2026
    Last Modified:Apr 27, 2026
    EPS:Apr 21, 2026
    EPSS Score:0.0005
    CVSS Score:7.5

    Affected Products

    Vendor
    Gomarkdown
    Product
    Markdown

    Exploits

    https://github.com/gomarkdown/markdown/security/advisories/GHSA-77fj-vx54-gvh7https://github.com/gomarkdown/markdown/security/advisories/GHSA-77fj-vx54-gvh7

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers
    CAPEC-66 SQL Injection
    CAPEC-676 NoSQL Injection

    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