SUSE-SU-2026:20053-1

Vulnerability from csaf_suse - Published: 2026-01-12 12:03 - Updated: 2026-09-20 18:35
Summary
Security update for libsoup
Severity
Important
Notes
Title of the patch: Security update for libsoup
Description of the patch: This update for libsoup fixes the following issues: - CVE-2025-14523: flaw in HTTP header handling can lead to host header parsing discrepancy between servers and proxies and allow for request smuggling, cache poisoning and bypass of access controls (bsc#1254876).
Patchnames: SUSE-SLE-Micro-6.0-557
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2025-14523
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.x86_64 —
Vendor Fix
Threats
Impact important
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
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      "text": "important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for libsoup",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for libsoup fixes the following issues:\n\n- CVE-2025-14523: flaw in HTTP header handling can lead to host header parsing discrepancy between servers and proxies\n  and allow for request smuggling, cache poisoning and bypass of access controls (bsc#1254876).\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-SLE-Micro-6.0-557",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_20053-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2026:20053-1",
        "url": "https://www.suse.com/support/update/announcement/2026/suse-su-202620053-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2026:20053-1",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-January/023756.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1254876",
        "url": "https://bugzilla.suse.com/1254876"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2025-14523 page",
        "url": "https://www.suse.com/security/cve/CVE-2025-14523/"
      }
    ],
    "title": "Security update for libsoup",
    "tracking": {
      "current_release_date": "2026-09-20T18:35:21Z",
      "generator": {
        "date": "2026-01-12T12:03:42Z",
        "engine": {
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          "version": "1"
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      },
      "id": "SUSE-SU-2026:20053-1",
      "initial_release_date": "2026-01-12T12:03:42Z",
      "revision_history": [
        {
          "date": "2026-01-12T12:03:42Z",
          "number": "1",
          "summary": "Current version"
        },
        {
          "date": "2026-09-16T18:34:59Z",
          "number": "2",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-16T19:25:48Z",
          "number": "3",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-17T15:05:36Z",
          "number": "4",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-19T15:38:54Z",
          "number": "5",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-20T18:35:21Z",
          "number": "6",
          "summary": "unknown changes"
        }
      ],
      "status": "final",
      "version": "6"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libsoup-3_0-0-0:3.4.2-10.1.aarch64",
                "product": {
                  "name": "libsoup-3_0-0-0:3.4.2-10.1.aarch64",
                  "product_id": "libsoup-3_0-0-0:3.4.2-10.1.aarch64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:gnome:libsoup:3.4.2:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/libsoup-3_0-0@3.4.2-10.1?arch=aarch64\u0026upstream=libsoup-0:3.4.2-10.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libsoup-3_0-0-0:3.4.2-10.1.s390x",
                "product": {
                  "name": "libsoup-3_0-0-0:3.4.2-10.1.s390x",
                  "product_id": "libsoup-3_0-0-0:3.4.2-10.1.s390x",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:gnome:libsoup:3.4.2:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/libsoup-3_0-0@3.4.2-10.1?arch=s390x\u0026upstream=libsoup-0:3.4.2-10.1.src.rpm"
                  }
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            "category": "architecture",
            "name": "s390x"
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                "name": "libsoup-3_0-0-0:3.4.2-10.1.x86_64",
                "product": {
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                  "product_id": "libsoup-3_0-0-0:3.4.2-10.1.x86_64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:gnome:libsoup:3.4.2:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/libsoup-3_0-0@3.4.2-10.1?arch=x86_64\u0026upstream=libsoup-0:3.4.2-10.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
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            "branches": [
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                "product": {
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                  "product_id": "SUSE Linux Micro 6.0",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:sl-micro:6.0"
                  }
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            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libsoup-3_0-0-0:3.4.2-10.1.aarch64 as component of SUSE Linux Micro 6.0",
          "product_id": "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.aarch64"
        },
        "product_reference": "libsoup-3_0-0-0:3.4.2-10.1.aarch64",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
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        },
        "product_reference": "libsoup-3_0-0-0:3.4.2-10.1.s390x",
        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
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        },
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        "relates_to_product_reference": "SUSE Linux Micro 6.0"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-14523",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-14523"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "A flaw in libsoup\u0027s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the backend interprets it as destined for another host. This discrepancy enables request-smuggling style attacks, cache poisoning, or bypassing host-based access controls when an attacker supplies duplicate Host headers.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.aarch64",
          "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.s390x",
          "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-14523",
          "url": "https://www.suse.com/security/cve/CVE-2025-14523"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1254876 for CVE-2025-14523",
          "url": "https://bugzilla.suse.com/1254876"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1259907 for CVE-2025-14523",
          "url": "https://bugzilla.suse.com/1259907"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1272026 for CVE-2025-14523",
          "url": "https://bugzilla.suse.com/1272026"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.aarch64",
            "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.s390x",
            "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.aarch64",
            "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.s390x",
            "SUSE Linux Micro 6.0:libsoup-3_0-0-0:3.4.2-10.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-01-12T12:03:42Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-14523"
    }
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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