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CVE-2026-12478 Libsoup: incomplete fix for cve-2026-0716: out-of-bounds read in libsoup websocket frame processing (unmasked path)

🗓️ 14 Jul 2026 09:26:19Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 54 Views

Libsoup WebSocket unmasked frames risk out-of-bounds read when max_incoming_payload_size is 0.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-12478
14 Jul 202609:26
–attackerkb
nessus
Tenable Nessus
Amazon Linux 2023 : libsoup3, libsoup3-devel (ALAS2023-2026-3144)
29 Sep 202600:00
–nessus
nessus
Tenable Nessus
Fedora 44 : libsoup3 (2026-c8cfd2f2f9)
15 Aug 202600:00
–nessus
nessus
Tenable Nessus
Fedora 43 : libsoup3 (2026-f3ca65c0c9)
27 Aug 202600:00
–nessus
nessus
Tenable Nessus
Unity Linux 20.1070e Security Update: libsoup (UTSA-2026-104940)
29 Aug 202600:00
–nessus
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-12478
14 Jul 202600:00
–nessus
amazon
Amazon
Important: libsoup3
29 Sep 202600:00
–amazon
circl
Circl
CVE-2026-12478
14 Jul 202612:24
–circl
cve
CVE
CVE-2026-12478
14 Jul 202609:26
–cve
debiancve
Debian CVE
CVE-2026-12478
14 Jul 202609:26
–debiancve
Rows per page
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 10",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "libsoup3",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:10"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "libsoup",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "libsoup",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "libsoup",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "libsoup",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9"
    ]
  }
]

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16 Sep 2026 08:01Current
CVSS 3.14.8
EPSS0.00241
SSVC
54