WID-SEC-W-2026-1187

Vulnerability from csaf_certbund - Published: 2026-04-20 22:00 - Updated: 2026-06-16 22:00
Summary
Ruby und Ruby on Rails (erb gem): Schwachstelle ermöglicht Codeausführung
Severity
Hoch
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: Ruby ist eine interpretierte, objektorientierte Skriptsprache. Ruby on Rails ist ein in der Programmiersprache Ruby geschriebenes und quelloffenes Web Application Framework.
Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Ruby und Ruby on Rails ausnutzen, um Sicherheitsmaßnahmen zu umgehen und so beliebigen Code auszuführen.
Betroffene Betriebssysteme: - Sonstiges - UNIX - Windows
Affected products
Product Identifier Version Remediation
Amazon Linux 2
Amazon
cpe:/o:amazon:linux_2:-
Red Hat Enterprise Linux 9.0
Red Hat / Enterprise Linux
cpe:/o:redhat:enterprise_linux:9.0 9
Open Source Ruby on Rails erb gem <4.0.4.1
Open Source / Ruby on Rails
erb gem <4.0.4.1
Open Source Ruby on Rails erb gem <6.0.1.1
Open Source / Ruby on Rails
erb gem <6.0.1.1
Open Source Ruby erb gem <6.0.4
Open Source / Ruby
erb gem <6.0.4
Open Source Ruby on Rails erb gem <4.0.3.1
Open Source / Ruby on Rails
erb gem <4.0.3.1
Red Hat Enterprise Linux
Red Hat / Enterprise Linux
cpe:/o:redhat:enterprise_linux:-
Open Source Ruby erb gem <6.0.1.1
Open Source / Ruby
erb gem <6.0.1.1
Red Hat Enterprise Linux 8
Red Hat / Enterprise Linux
cpe:/o:redhat:enterprise_linux:8 8
Open Source Ruby erb gem <4.0.3.1
Open Source / Ruby
erb gem <4.0.3.1
Red Hat Enterprise Linux 10
Red Hat / Enterprise Linux
cpe:/o:redhat:enterprise_linux:10 10
Red Hat Enterprise Linux 9
Red Hat / Enterprise Linux
cpe:/o:redhat:enterprise_linux:9 9
Open Source Ruby erb gem <4.0.4.1
Open Source / Ruby
erb gem <4.0.4.1
Oracle Linux
Oracle
cpe:/o:oracle:linux:-
RESF Rocky Linux
RESF
cpe:/o:resf:rocky_linux:-
Open Source Ruby on Rails erb gem <6.0.4
Open Source / Ruby on Rails
erb gem <6.0.4

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Ruby ist eine interpretierte, objektorientierte Skriptsprache.\r\nRuby on Rails ist ein in der Programmiersprache Ruby geschriebenes und quelloffenes Web Application Framework.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Ruby und Ruby on Rails ausnutzen, um Sicherheitsma\u00dfnahmen zu umgehen und so beliebigen Code auszuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges\n- UNIX\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-1187 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1187.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1187 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1187"
      },
      {
        "category": "external",
        "summary": "Ruby Security Advisory vom 2026-04-20",
        "url": "https://www.ruby-lang.org/en/news/2026/04/21/erb-cve-2026-41316/"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2-2026-3284 vom 2026-05-14",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3284.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:18039 vom 2026-05-18",
        "url": "https://access.redhat.com/errata/RHSA-2026:18039"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:18065 vom 2026-05-18",
        "url": "https://access.redhat.com/errata/RHSA-2026:18065"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:18030 vom 2026-05-18",
        "url": "https://errata.build.resf.org/RLSA-2026:18030"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:18030 vom 2026-05-18",
        "url": "https://access.redhat.com/errata/RHSA-2026:18030"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-18065 vom 2026-05-18",
        "url": "https://linux.oracle.com/errata/ELSA-2026-18065.html"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:18065 vom 2026-05-19",
        "url": "https://errata.build.resf.org/RLSA-2026:18065"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-18030 vom 2026-05-19",
        "url": "https://linux.oracle.com/errata/ELSA-2026-18030.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-18039 vom 2026-05-20",
        "url": "https://linux.oracle.com/errata/ELSA-2026-18039.html"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:18039 vom 2026-05-19",
        "url": "https://errata.build.resf.org/RLSA-2026:18039"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:20606 vom 2026-05-26",
        "url": "https://access.redhat.com/errata/RHSA-2026:20606"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:20670 vom 2026-05-26",
        "url": "https://access.redhat.com/errata/RHSA-2026:20670"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:20596 vom 2026-05-26",
        "url": "https://access.redhat.com/errata/RHSA-2026:20596"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:20614 vom 2026-05-26",
        "url": "https://access.redhat.com/errata/RHSA-2026:20614"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:20614 vom 2026-05-26",
        "url": "https://errata.build.resf.org/RLSA-2026:20614"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-20614 vom 2026-05-27",
        "url": "https://linux.oracle.com/errata/ELSA-2026-20614.html"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:20606 vom 2026-06-04",
        "url": "https://errata.build.resf.org/RLSA-2026:20606"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:26312 vom 2026-06-16",
        "url": "https://access.redhat.com/errata/RHSA-2026:26312"
      }
    ],
    "source_lang": "en-US",
    "title": "Ruby und Ruby on Rails (erb gem): Schwachstelle erm\u00f6glicht Codeausf\u00fchrung",
    "tracking": {
      "current_release_date": "2026-06-16T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-17T09:00:41.288+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1187",
      "initial_release_date": "2026-04-20T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-04-20T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-04-23T22:00:00.000+00:00",
          "number": "2",
          "summary": "Referenz(en) aufgenommen: EUVD-2026-25385"
        },
        {
          "date": "2026-05-14T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2026-05-17T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2026-05-18T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Red Hat, Rocky Enterprise Software Foundation und Oracle Linux aufgenommen"
        },
        {
          "date": "2026-05-19T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation und Oracle Linux aufgenommen"
        },
        {
          "date": "2026-05-25T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2026-05-26T22:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation aufgenommen"
        },
        {
          "date": "2026-05-27T22:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2026-06-04T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation aufgenommen"
        },
        {
          "date": "2026-06-16T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von Red Hat aufgenommen"
        }
      ],
      "status": "final",
      "version": "11"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "T054035",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "erb gem \u003c4.0.3.1",
                "product": {
                  "name": "Open Source Ruby erb gem \u003c4.0.3.1",
                  "product_id": "T053028"
                }
              },
              {
                "category": "product_version",
                "name": "erb gem 4.0.3.1",
                "product": {
                  "name": "Open Source Ruby erb gem 4.0.3.1",
                  "product_id": "T053028-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ruby-lang:ruby:erb_gem__4.0.3.1"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "erb gem \u003c4.0.4.1",
                "product": {
                  "name": "Open Source Ruby erb gem \u003c4.0.4.1",
                  "product_id": "T053029"
                }
              },
              {
                "category": "product_version",
                "name": "erb gem 4.0.4.1",
                "product": {
                  "name": "Open Source Ruby erb gem 4.0.4.1",
                  "product_id": "T053029-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ruby-lang:ruby:erb_gem__4.0.4.1"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "erb gem \u003c6.0.1.1",
                "product": {
                  "name": "Open Source Ruby erb gem \u003c6.0.1.1",
                  "product_id": "T053030"
                }
              },
              {
                "category": "product_version",
                "name": "erb gem 6.0.1.1",
                "product": {
                  "name": "Open Source Ruby erb gem 6.0.1.1",
                  "product_id": "T053030-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ruby-lang:ruby:erb_gem__6.0.1.1"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "erb gem \u003c6.0.4",
                "product": {
                  "name": "Open Source Ruby erb gem \u003c6.0.4",
                  "product_id": "T053031"
                }
              },
              {
                "category": "product_version",
                "name": "erb gem 6.0.4",
                "product": {
                  "name": "Open Source Ruby erb gem 6.0.4",
                  "product_id": "T053031-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ruby-lang:ruby:erb_gem__6.0.4"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Ruby"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "erb gem \u003c4.0.3.1",
                "product": {
                  "name": "Open Source Ruby on Rails erb gem \u003c4.0.3.1",
                  "product_id": "T053032"
                }
              },
              {
                "category": "product_version",
                "name": "erb gem 4.0.3.1",
                "product": {
                  "name": "Open Source Ruby on Rails erb gem 4.0.3.1",
                  "product_id": "T053032-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:rubyonrails:ruby_on_rails:erb_gem__4.0.3.1"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "erb gem \u003c4.0.4.1",
                "product": {
                  "name": "Open Source Ruby on Rails erb gem \u003c4.0.4.1",
                  "product_id": "T053033"
                }
              },
              {
                "category": "product_version",
                "name": "erb gem 4.0.4.1",
                "product": {
                  "name": "Open Source Ruby on Rails erb gem 4.0.4.1",
                  "product_id": "T053033-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:rubyonrails:ruby_on_rails:erb_gem__4.0.4.1"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "erb gem \u003c6.0.1.1",
                "product": {
                  "name": "Open Source Ruby on Rails erb gem \u003c6.0.1.1",
                  "product_id": "T053034"
                }
              },
              {
                "category": "product_version",
                "name": "erb gem 6.0.1.1",
                "product": {
                  "name": "Open Source Ruby on Rails erb gem 6.0.1.1",
                  "product_id": "T053034-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:rubyonrails:ruby_on_rails:erb_gem__6.0.1.1"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "erb gem \u003c6.0.4",
                "product": {
                  "name": "Open Source Ruby on Rails erb gem \u003c6.0.4",
                  "product_id": "T053035"
                }
              },
              {
                "category": "product_version",
                "name": "erb gem 6.0.4",
                "product": {
                  "name": "Open Source Ruby on Rails erb gem 6.0.4",
                  "product_id": "T053035-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:rubyonrails:ruby_on_rails:erb_gem__6.0.4"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Ruby on Rails"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Oracle Linux",
            "product": {
              "name": "Oracle Linux",
              "product_id": "T004914",
              "product_identification_helper": {
                "cpe": "cpe:/o:oracle:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Oracle"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "RESF Rocky Linux",
            "product": {
              "name": "RESF Rocky Linux",
              "product_id": "T032255",
              "product_identification_helper": {
                "cpe": "cpe:/o:resf:rocky_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "RESF"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux",
                "product": {
                  "name": "Red Hat Enterprise Linux",
                  "product_id": "67646",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:-"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "10",
                "product": {
                  "name": "Red Hat Enterprise Linux 10",
                  "product_id": "T054656",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:10"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "9",
                "product": {
                  "name": "Red Hat Enterprise Linux 9.0",
                  "product_id": "T054662",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:9.0"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "9",
                "product": {
                  "name": "Red Hat Enterprise Linux 9",
                  "product_id": "T054700",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:9"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "8",
                "product": {
                  "name": "Red Hat Enterprise Linux 8",
                  "product_id": "T054703",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:8"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Enterprise Linux"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-41316",
      "product_status": {
        "known_affected": [
          "T054035",
          "T054662",
          "T053033",
          "T053034",
          "T053031",
          "T053032",
          "67646",
          "T053030",
          "T054703",
          "T053028",
          "T054656",
          "T054700",
          "T053029",
          "T004914",
          "T032255",
          "T053035"
        ]
      },
      "release_date": "2026-04-20T22:00:00.000+00:00",
      "title": "CVE-2026-41316"
    }
  ]
}


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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.

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Detection rules are retrieved from Rulezet.

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