Regexp2: Unbounded memory amplification via large `{m}` quantifier on a zero-width subexpression
? CVE-2026-77299 · score 7.5/10
What could go wrong?
Microsoft fixed a security weakness. Details are limited to avoid helping attackers.
How urgent is it?
Check Microsoft’s page for details.
Who is affected?
azl3 dasel 2.8.1-5 on Azure Linux 3.0, azl3 gh 2.102.0-2 on Azure Linux 3.0
What should I do?
Install this month’s updates via Windows Update, Intune or your update tool, then restart.
Known problems
Microsoft lists known issues per update: no KB article listed. Official page.