CVE-2026-4833MediumMicrosoft CVSS 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C

Microsoft security update for CVE-2026-4833

Published
May 31, 2026
Last Modified
—

🔗 CVE IDs covered (1)

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-4833. This page also shows what EchelonGraph holds for CVE-2026-4833, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products5

  • azl3 rubygem-rdiscount 2.2.7.1-1 on Azure Linux 3.0
  • azl3 rubygem-rdiscount 2.2.7.4-1 on Azure Linux 3.0
  • cbl2 rubygem-rdiscount 2.2.0.2-3
  • cbl2 rubygem-rdiscount 2.2.0.2-3 on CBL Mariner 2.0
  • cbl2 rubygem-rdiscount 2.2.0.2-3 on CBL-Mariner 2.0

✅ Updates Microsoft lists: 1 update

1 row: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB articleUpdateFixed build
—Security Update—

🧭 EchelonGraph on CVE-2026-4833

EchelonGraph score
3.3 LOW
CISA KEV
Not listed
Fix status
A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

A weakness has been identified in Orc discount up to 3.0.1.2. This issue affects the function compile of the file markdown.c of the component Markdown Handler. This manipulation causes uncontrolled recursion. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project maintainer confirms: "[I]f you feed it an infinitely deep blockquote input it will crash. (...) [T]his is a duplicate of an old bug that I've been working on."

Published by VulDB, the CVE Numbering Authority that assigned CVE-2026-4833, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 References (2)