Vulnerability-Lookup

WID-SEC-W-2026-0824

Vulnerability from csaf_certbund - Published: 2026-03-22 23:00 - Updated: 2026-03-26 23:00

Summary

Python: Schwachstelle ermöglicht Codeausführung

Severity

Mittel

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: Python ist eine universelle, üblicherweise interpretierte, höhere Programmiersprache.

Angriff: Ein Angreifer kann eine Schwachstelle in Python ausnutzen, um beliebigen Programmcode auszuführen.

Betroffene Betriebssysteme: - Linux - Sonstiges - UNIX - Windows

CVE-2026-4519

References

URL

Category

	https://wid.cert-bund.de/.well-known/csaf/white/2…	self
	https://wid.cert-bund.de/portal/wid/securityadvis…	self
	https://www.cve.org/CVERecord?id=CVE-2026-4519	external
	https://mail.python.org/archives/list/security-an…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
	https://bodhi.fedoraproject.org/updates/FEDORA-20…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "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": "Python ist eine universelle, \u00fcblicherweise interpretierte, h\u00f6here Programmiersprache.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann eine Schwachstelle in Python ausnutzen, um beliebigen Programmcode auszuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- 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-2026-0824 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0824.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-0824 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0824"
      },
      {
        "category": "external",
        "summary": "CVE Record vom 2026-03-20",
        "url": "https://www.cve.org/CVERecord?id=CVE-2026-4519"
      },
      {
        "category": "external",
        "summary": "Python Mailing List vom 2026-03-20",
        "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/AY5NDSS433JK56Q7Q5IS7B37QFZVVOUS/"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-15F71C015C vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-15f71c015c"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-3D7EA476E1 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-3d7ea476e1"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-013FB3D1BC vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-013fb3d1bc"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-3B4578D2F4 vom 2026-03-27",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-3b4578d2f4"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-304F76C660 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-304f76c660"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-9C8D7E5C9A vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-9c8d7e5c9a"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-838BF0F5D5 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-838bf0f5d5"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-919A30C67B vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-919a30c67b"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-BA6745D242 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-ba6745d242"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-E2F42121F3 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-e2f42121f3"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-E8C06584A9 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-e8c06584a9"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-1FB0E26534 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-1fb0e26534"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-F7B3EBE324 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-f7b3ebe324"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-1E87D53608 vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-1e87d53608"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-0FF49872AE vom 2026-03-26",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-0ff49872ae"
      }
    ],
    "source_lang": "en-US",
    "title": "Python: Schwachstelle erm\u00f6glicht Codeausf\u00fchrung",
    "tracking": {
      "current_release_date": "2026-03-26T23:00:00.000+00:00",
      "generator": {
        "date": "2026-03-27T09:01:33.429+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.5.0"
        }
      },
      "id": "WID-SEC-W-2026-0824",
      "initial_release_date": "2026-03-22T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-03-22T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-03-25T23:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Fedora aufgenommen"
        },
        {
          "date": "2026-03-26T23:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Fedora aufgenommen"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Fedora Linux",
            "product": {
              "name": "Fedora Linux",
              "product_id": "74185",
              "product_identification_helper": {
                "cpe": "cpe:/o:fedoraproject:fedora:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Fedora"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c3.15.0",
                "product": {
                  "name": "Open Source Python \u003c3.15.0",
                  "product_id": "T051762"
                }
              },
              {
                "category": "product_version",
                "name": "3.15.0",
                "product": {
                  "name": "Open Source Python 3.15.0",
                  "product_id": "T051762-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:python:python:3.15.0"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Python"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-4519",
      "product_status": {
        "known_affected": [
          "T051762",
          "74185"
        ]
      },
      "release_date": "2026-03-22T23:00:00.000+00:00",
      "title": "CVE-2026-4519"
    }
  ]
}

CVE-2026-4519 (GCVE-0-2026-4519)

Vulnerability from cvelistv5 – Published: 2026-03-20 15:08 – Updated: 2026-03-25 17:32

Title

webbrowser.open() allows leading dashes in URLs

Summary

The webbrowser.open() API would accept leading dashes in the URL which could be handled as command line options for certain web browsers. New behavior rejects leading dashes. Users are recommended to sanitize URLs prior to passing to webbrowser.open().

Severity ?

7 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

CWE-20 - Improper Input Validation

Assigner

PSF

References

URL

Tags

	https://github.com/python/cpython/pull/143931	patch
	https://github.com/python/cpython/issues/143930	issue-tracking
	https://mail.python.org/archives/list/security-an…	vendor-advisory
	https://github.com/python/cpython/commit/43fe06b9…	patch
	https://github.com/python/cpython/commit/82a24a44…	patch
	https://github.com/python/cpython/commit/9669a912…	patch
	https://github.com/python/cpython/commit/ad4d5ba3…	patch
	https://github.com/python/cpython/commit/ceac1efc…	patch
	https://github.com/python/cpython/commit/cbba6119…	patch

Impacted products

	Vendor	Product	Version
	Python Software Foundation	CPython	Affected: 0 , < 3.15.0 (python)

Credits

Seth Larson Gregory P. Smith

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2026-03-20T20:07:08.244Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/03/20/1"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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            "other": {
              "content": {
                "id": "CVE-2026-4519",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-25T14:30:47.809505Z",
                "version": "2.0.3"
              },
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        "problemTypes": [
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "webbrowser"
          ],
          "product": "CPython",
          "repo": "https://github.com/python/cpython",
          "vendor": "Python Software Foundation",
          "versions": [
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              "version": "0",
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        {
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          "type": "remediation reviewer",
          "value": "Gregory P. Smith"
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      "descriptions": [
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          ],
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      "metrics": [
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          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
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            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
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            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "url": "https://github.com/python/cpython/pull/143931"
        },
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          "tags": [
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          "url": "https://github.com/python/cpython/issues/143930"
        },
        {
          "tags": [
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          "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/AY5NDSS433JK56Q7Q5IS7B37QFZVVOUS/"
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    "datePublished": "2026-03-20T15:08:32.576Z",
    "dateReserved": "2026-03-20T15:01:11.126Z",
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    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

WID-SEC-W-2026-0824

CVE-2026-4519 (GCVE-0-2026-4519)

Tags

Sightings

Nomenclature