CVE-2023-42821
CVSS 3.1 Score 7.5 of 10 (high)
Details
Summary
CVE-2023-42821 is a vulnerability that affects the package `github.com/gomarkdown/markdown`, a Go library used for parsing Markdown text and rendering it as HTML. It was present in versions prior to pseudoversion `0.0.0-20230922105210-14b16010c2ee` or commit `14b16010c2ee7ff33a940a541d993bd043a88940`. This vulnerability allows for an out-of-bounds read when parsing malformed markdown input with the parser.Mmark extension, potentially leading to a denial of service. The specific panic occurs in the `citation.go` file on line 69 when the parser tries to access an element beyond its length. A patch for this issue is included in commit `14b16010c2ee7ff33a940a541d993bd043a88940`/pseudoversion `0.0.0-20230922105210-14b16010c2ee`. The vulnerability has a base severity rating of HIGH with a base score of 7.5 according to NIST's National Vulnerability Database (NVD).
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