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CVE-2026-6324 Libsoup: libsoup: http request smuggling via unsigned to signed conversion error

🗓️ 29 May 2026 05:24:07Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 102 Views

Remote attacker exploits Libsoup unsigned to signed error to smuggle requests via non libsoup proxies, bypassing controls.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins
Security Bulletin: IBM App Connect Enterprise Certified Container UBI updates
2 Jul 202610:48
–ibm
attackerkb
attackerkb
CVE-2026-6324
29 May 202605:24
–attackerkb
bdu_fstec
BDU FSTEC
LibSoup Heap Buffer Overflow DoS
4 Jun 202600:00
–bdu_fstec
cbl_mariner
CBLMariner
CVE-2026-6324 affecting package libsoup for versions less than 3.4.4-16
8 Jul 202616:02
–cbl_mariner
circl
Circl
CVE-2026-6324
29 May 202609:44
–circl
cnnvd
CNNVD
libsoup security vulnerabilities
29 May 202600:00
–cnnvd
cve
CVE
CVE-2026-6324
29 May 202605:24
–cve
debiancve
Debian CVE
CVE-2026-6324
29 May 202605:24
–debiancve
nessus
Tenable Nessus
EulerOS 2.0 SP13 : libsoup (EulerOS-SA-2026-2977)
6 Aug 202600:00
–nessus
nessus
Tenable Nessus
EulerOS 2.0 SP13 : libsoup (EulerOS-SA-2026-3027)
6 Aug 202600:00
–nessus
Rows per page
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 10",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "libsoup3",
    "defaultStatus": "unknown",
    "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": "unknown",
    "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": "unknown",
    "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": "unknown",
    "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": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9"
    ]
  }
]

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