What is CVE-2026-40890?

CVE-2026-40890 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. github.com/gomarkdown/markdown: Out-of-bounds Read in SmartypantsRenderer

Which CVE IDs does CVE-2026-40890 cover?

CVE-2026-40890 covers the following CVE IDs: CVE-2026-40890. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-40890?

CVE-2026-40890 has a CVSS v3 base score of 7.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-40890?

CVE-2026-40890 affects 2 products, including: cbl2 cri-o 1.22.3-20 on CBL Mariner 2.0; cbl2 cri-o 1.22.3-20 on CBL-Mariner 2.0.

CVE-2026-40890HighCVSS 7.5

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Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-40890 →

🎯 Affected products2

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

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 1.22.3-21 KBRelease Notes (Security Update) — fixed build 1.22.3-21

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40890
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade