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Microsoft Security Response CenterCVE-2025-14523

Libsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)

Mariner

Read the vendor bulletin Get alerts for azl3 libsoup 3.4.4-10 on Azure Linux
8.2CVSS out of 10High severity
Scope

What the vendor says is affected

  • azl3 libsoup 3.4.4-10 on Azure Linux 3.0
  • cbl2 libsoup 3.0.4-10 on CBL Mariner 2.0
  • azl3 libsoup 3.4.4-11 on Azure Linux 3.0
  • cbl2 libsoup 3.0.4-12 on CBL Mariner 2.0
  • azl3 libsoup 3.4.4-12 on Azure Linux 3.0
  • azl3 libsoup 3.4.4-14 on Azure Linux 3.0
  • cbl2 libsoup 3.0.4-13 on CBL Mariner 2.0
  • azl3 libsoup 3.4.4-15 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.

Vulnerabilities

CVEs named in this advisory

CVE-2025-14523View CVSS, KEV, EPSS, and threat context
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