high7.5
CVE-2026-40890
The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as HTML.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/gomarkdown/markdown | < 0.0.0-20260411013819-759bbc3e3207 | 0.0.0-20260411013819-759bbc3e3207 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Gomarkdown | Markdown | before 2026-04-10 |