OPENSUSE-SU-2026:11047-1

Vulnerability from csaf_opensuse - Published: 2026-06-17 00:00 - Updated: 2026-09-17 17:10
Summary
traefik-3.7.5-1.1 on GA media
Severity
Moderate
Notes
Title of the patch: traefik-3.7.5-1.1 on GA media
Description of the patch: These are all security issues fixed in the traefik-3.7.5-1.1 package on the GA media of openSUSE Tumbleweed.
Patchnames: openSUSE-Tumbleweed-2026-11047
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-2026-48020
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64 —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x —
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64 —
Vendor Fix
Threats
Impact critical
CVE-2026-48491
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected products
Recommended 4 products, the same list as for CVE-2026-48020
Threats
Impact critical
CVE-2026-53622
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected products
Recommended 4 products, the same list as for CVE-2026-48020
Threats
Impact critical
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "moderate"
    },
    "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": "traefik-3.7.5-1.1 on GA media",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "These are all security issues fixed in the traefik-3.7.5-1.1 package on the GA media of openSUSE Tumbleweed.",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "openSUSE-Tumbleweed-2026-11047",
        "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/opensuse-su-2026_11047-1.json"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-48020 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-48020/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-48491 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-48491/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-53622 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-53622/"
      }
    ],
    "title": "traefik-3.7.5-1.1 on GA media",
    "tracking": {
      "current_release_date": "2026-09-17T17:10:03Z",
      "generator": {
        "date": "2026-06-17T00:00:00Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "openSUSE-SU-2026:11047-1",
      "initial_release_date": "2026-06-17T00:00:00Z",
      "revision_history": [
        {
          "date": "2026-06-17T00:00:00Z",
          "number": "1",
          "summary": "Current version"
        },
        {
          "date": "2026-09-16T20:14:58Z",
          "number": "2",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-16T21:17:08Z",
          "number": "3",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-17T17:10:03Z",
          "number": "4",
          "summary": "unknown changes"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "traefik-0:3.7.5-1.1.aarch64",
                "product": {
                  "name": "traefik-0:3.7.5-1.1.aarch64",
                  "product_id": "traefik-0:3.7.5-1.1.aarch64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:traefik:traefik:3.7.5:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/traefik@3.7.5-1.1?arch=aarch64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "traefik-0:3.7.5-1.1.ppc64le",
                "product": {
                  "name": "traefik-0:3.7.5-1.1.ppc64le",
                  "product_id": "traefik-0:3.7.5-1.1.ppc64le",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:traefik:traefik:3.7.5:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/traefik@3.7.5-1.1?arch=ppc64le"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "ppc64le"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "traefik-0:3.7.5-1.1.s390x",
                "product": {
                  "name": "traefik-0:3.7.5-1.1.s390x",
                  "product_id": "traefik-0:3.7.5-1.1.s390x",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:traefik:traefik:3.7.5:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/traefik@3.7.5-1.1?arch=s390x"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "traefik-0:3.7.5-1.1.x86_64",
                "product": {
                  "name": "traefik-0:3.7.5-1.1.x86_64",
                  "product_id": "traefik-0:3.7.5-1.1.x86_64",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:traefik:traefik:3.7.5:*:*:*:*:*:*:*",
                    "purl": "pkg:rpm/suse/traefik@3.7.5-1.1?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "openSUSE Tumbleweed",
                "product": {
                  "name": "openSUSE Tumbleweed",
                  "product_id": "openSUSE Tumbleweed",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:opensuse:tumbleweed"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "traefik-0:3.7.5-1.1.aarch64 as component of openSUSE Tumbleweed",
          "product_id": "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64"
        },
        "product_reference": "traefik-0:3.7.5-1.1.aarch64",
        "relates_to_product_reference": "openSUSE Tumbleweed"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "traefik-0:3.7.5-1.1.ppc64le as component of openSUSE Tumbleweed",
          "product_id": "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le"
        },
        "product_reference": "traefik-0:3.7.5-1.1.ppc64le",
        "relates_to_product_reference": "openSUSE Tumbleweed"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "traefik-0:3.7.5-1.1.s390x as component of openSUSE Tumbleweed",
          "product_id": "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x"
        },
        "product_reference": "traefik-0:3.7.5-1.1.s390x",
        "relates_to_product_reference": "openSUSE Tumbleweed"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "traefik-0:3.7.5-1.1.x86_64 as component of openSUSE Tumbleweed",
          "product_id": "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
        },
        "product_reference": "traefik-0:3.7.5-1.1.x86_64",
        "relates_to_product_reference": "openSUSE Tumbleweed"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-48020",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-48020"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.48, 3.6.19, and 3.7.3, there is a high severity vulnerability in Traefik\u0027s StripPrefix middleware that allows an unauthenticated attacker to bypass route-level authentication and authorization. When a public router matches on a PathPrefix rule and applies the StripPrefix middleware, a request path containing .. or its percent-encoded form %2e%2e can match the public route at routing time and then, after the prefix is stripped and the path is normalized, resolve to a path served by a separate, authenticated router. As a result, an attacker can reach protected backend paths - such as admin or internal configuration endpoints - without satisfying the authentication middleware attached to the protected router. This vulnerability is fixed in 2.11.48, 3.6.19, and 3.7.3.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-48020",
          "url": "https://www.suse.com/security/cve/CVE-2026-48020"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1268387 for CVE-2026-48020",
          "url": "https://bugzilla.suse.com/1268387"
        }
      ],
      "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": [
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-17T00:00:00Z",
          "details": "critical"
        }
      ],
      "title": "CVE-2026-48020"
    },
    {
      "cve": "CVE-2026-48491",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-48491"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Traefik is an HTTP reverse proxy and load balancer. From 3.7.0 until 3.7.3, there is a high severity vulnerability in Traefik\u0027s domain-fronting protection (SNICheck) that allows an unauthenticated client to bypass mutual TLS enforced through wildcard router TLSOptions. When a router uses a wildcard host rule such as Host(*.example.com) with stricter TLS options (for example RequireAndVerifyClientCert), SNICheck resolves the TLS options for the HTTP Host header using exact map lookups only and never applies wildcard matching. If another permissive SNI is served on the same entrypoint, an attacker can complete the TLS handshake under the permissive options and then send an HTTP Host header targeting the wildcard-protected backend, reaching it without presenting a client certificate. This affects the regular HTTPS / HTTP-2 path and does not require HTTP/3. This vulnerability is fixed in 3.7.3.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-48491",
          "url": "https://www.suse.com/security/cve/CVE-2026-48491"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1269068 for CVE-2026-48491",
          "url": "https://bugzilla.suse.com/1269068"
        }
      ],
      "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": [
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-17T00:00:00Z",
          "details": "critical"
        }
      ],
      "title": "CVE-2026-48491"
    },
    {
      "cve": "CVE-2026-53622",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-53622"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Traefik is an HTTP reverse proxy and load balancer. Versions prior to 3.7.3, 3.6.18, and 2.11.51 have a critical vulnerability in Traefik\u0027s HTTP/3 (QUIC) TLS configuration selection that allows unauthenticated clients to bypass router-specific mTLS enforcement. When HTTP/3 is enabled on an entrypoint, the TLS handshake selects the applicable TLS configuration through an exact, case-sensitive lookup on the SNI value, which fails to match wildcard host patterns (e.g., *.example.com) or case variants of the configured hostname. Because the handshake falls back to the default TLS configuration - which may not require client certificates - a client can complete the QUIC handshake without presenting a certificate, while the subsequent HTTP routing layer still dispatches the request to a backend protected by a router-specific mTLS policy. The issue affects deployments where HTTP/3 is enabled, a router uses a wildcard Host rule or case-insensitive hostname matching, a router-specific TLSOptions enforces client certificate authentication, and UDP access to the entrypoint is reachable by an attacker. This vulnerability is fixed in versions 3.7.3, 3.6.18, and 2.11.51.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
          "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-53622",
          "url": "https://www.suse.com/security/cve/CVE-2026-53622"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1269067 for CVE-2026-53622",
          "url": "https://bugzilla.suse.com/1269067"
        }
      ],
      "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": [
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.aarch64",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.ppc64le",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.s390x",
            "openSUSE Tumbleweed:traefik-0:3.7.5-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-17T00:00:00Z",
          "details": "critical"
        }
      ],
      "title": "CVE-2026-53622"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.