Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 15.4%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-40890
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cpe:2.3:a:gomarkdown:markdown:-