UBUNTU-CVE-2026-40890

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Source
https://ubuntu.com/security/CVE-2026-40890
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40890.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-40890
Upstream
  • CVE-2026-40890
Published
2026-04-21T20:17:00Z
Modified
2026-05-20T16:25:40.427913953Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:24.04:LTS / golang-github-gomarkdown-markdown

Package

Name
golang-github-gomarkdown-markdown
Purl
pkg:deb/ubuntu/golang-github-gomarkdown-markdown?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.0~git20220731.dcdaee8-2
0.0~git20231115.a660076-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-github-gomarkdown-markdown-dev",
            "binary_version": "0.0~git20231115.a660076-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40890.json"

Ubuntu:25.10 / golang-github-gomarkdown-markdown

Package

Name
golang-github-gomarkdown-markdown
Purl
pkg:deb/ubuntu/golang-github-gomarkdown-markdown?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.0~git20231115.a660076-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-github-gomarkdown-markdown-dev",
            "binary_version": "0.0~git20231115.a660076-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40890.json"

Ubuntu:26.04:LTS / golang-github-gomarkdown-markdown

Package

Name
golang-github-gomarkdown-markdown
Purl
pkg:deb/ubuntu/golang-github-gomarkdown-markdown?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.0~git20231115.a660076-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "golang-github-gomarkdown-markdown-dev",
            "binary_version": "0.0~git20231115.a660076-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40890.json"