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Microsoft Security Response CenterCVE-2026-2739

This affects versions of the package bn.js before 5.2.3. Calling maskn(0) on any BN instance corrupts the internal state, causing toString(), divmod(), and other methods to enter an infinite loop, hanging the process indefinitely.

Mariner

Read the vendor bulletin Get alerts for cbl2 reaper 3.1.1-22 on CBL Mariner
MediumCVSS not listedMedium severity
Scope

What the vendor says is affected

  • cbl2 reaper 3.1.1-22 on CBL Mariner 2.0
  • cbl2 reaper 3.1.1-22 on CBL-Mariner 2.0

Versions the vendor lists as fixed

  • 3.1.1-23
Next step

What the vendor recommends

CBL-Mariner Releases Release Notes

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-2739View CVSS, KEV, EPSS, and threat context
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