Bug 2460245 (CVE-2026-40890) - CVE-2026-40890 github.com/gomarkdown/markdown: github.com/gomarkdown/markdown: Denial of Service via malformed Markdown input
Summary: CVE-2026-40890 github.com/gomarkdown/markdown: github.com/gomarkdown/markdown...
Keywords:
Status: NEW
Alias: CVE-2026-40890
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2461583 2461584 2461585
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-21 20:03 UTC by OSIDB Bzimport
Modified: 2026-04-27 15:59 UTC (History)
5 users (show)

Fixed In Version:
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Environment:
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Description OSIDB Bzimport 2026-04-21 20:03:19 UTC 
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.
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