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DEBIAN-CVE-2026-40890

Type: advisorySource: OSV1 source record

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.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-40890

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-40890

golang-github-gomarkdown-markdown

Source reference: /affected/0/package/name

Affected versions
0.0~git20220731.dcdaee8-2

Source reference: /affected/0/versions

0.0~git20231115.a660076-1

Source reference: /affected/0/versions

0.0~git20260725.8435af3-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

golang-github-gomarkdown-markdown

Source reference: /affected/1/package/name

Affected versions
0.0~git20231115.a660076-1

Source reference: /affected/1/versions

0.0~git20260725.8435af3-1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

golang-github-gomarkdown-markdown

Source reference: /affected/2/package/name

Affected versions
0.0~git20231115.a660076-1

Source reference: /affected/2/versions

Fixed versions
0.0~git20260725.8435af3-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "golang-github-gomarkdown-markdown",
      "purl": "pkg:deb/debian/golang-github-gomarkdown-markdown?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "0.0~git20220731.dcdaee8-2",
      "0.0~git20231115.a660076-1",
      "0.0~git20260725.8435af3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40890.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "golang-github-gomarkdown-markdown",
      "purl": "pkg:deb/debian/golang-github-gomarkdown-markdown?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "0.0~git20231115.a660076-1",
      "0.0~git20260725.8435af3-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40890.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.0~git20260725.8435af3-1"
          }
        ]
      }
    ],
    "package": {
      "name": "golang-github-gomarkdown-markdown",
      "purl": "pkg:deb/debian/golang-github-gomarkdown-markdown?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "0.0~git20231115.a660076-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40890.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56485 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-40890 · Revision 1Source updated