Microsoft security update for CVE-2026-3634
🔗 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-2026-3634. This page also shows what EchelonGraph holds for CVE-2026-3634, 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 products10
- azl3 libsoup 3.4.4-12 on Azure Linux 3.0
- azl3 libsoup 3.4.4-14 on Azure Linux 3.0
- azl3 libsoup 3.4.4-15 on Azure Linux 3.0
- azl3 libsoup 3.4.4-16 on Azure Linux 3.0
- azl3 libsoup 3.4.4-17 on Azure Linux 3.0
- azl3 libsoup 3.4.4-18 on Azure Linux 3.0
- cbl2 libsoup 3.0.4-12 on CBL Mariner 2.0
- cbl2 libsoup 3.0.4-13
- cbl2 libsoup 3.0.4-13 on CBL Mariner 2.0
- cbl2 libsoup 3.0.4-13 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 article | Update | Fixed build |
|---|---|---|
| — | Security Update | — |
🧭 EchelonGraph on CVE-2026-3634
- EchelonGraph score
- 6.5 MEDIUM
- 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 flaw was found in libsoup. An attacker controlling the value used to set the Content-Type header can inject a Carriage Return Line Feed (CRLF) sequence due to improper input sanitization in the `soup_message_headers_set_content_type()` function. This vulnerability allows for the injection of arbitrary header-value pairs, potentially leading to HTTP header injection and response splitting attacks.
Published by Red Hat, Inc., the CVE Numbering Authority that assigned CVE-2026-3634, 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).