CVE-2026-40890: github.com/gomarkdown/markdown: Out-of-bounds Read in SmartypantsRenderer

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-04-23

Last Updated

2026-09-25

EPSS Score

0.52% (percentile: 43.0%)

Affected Products (2)

Open Source Software

• cbl2 cri-o 1.22.3-20 on CBL Mariner 2.0

Other

• 21187-21692

Revision History

• 2026-04-23: Information published.
• 2026-04-24: Information published.
• 2026-09-25: Information published.