Search threats, CVEs… ⌘K
Back to vendor advisories
Microsoft Security Response CenterCVE-2026-15308

Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations

Mariner

Read the vendor bulletin Get alerts for azl3 python3 3.12.9-13 on Azure Linux
7.5CVSS out of 10High severity
Scope

What the vendor says is affected

  • azl3 python3 3.12.9-13 on Azure Linux 3.0
  • azl3 python3 3.12.9-14 on Azure Linux 3.0
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.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-15308View CVSS, KEV, EPSS, and threat context
Keep investigating
See every advisory from this vendor