{
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      "text": "Low"
    },
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      "text": "TuxCare License Agreement",
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
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    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "* SECURITY UPDATE: command-line option injection in webbrowser.open()\n     - debian/patches/CVE-2026-4519.patch: reject leading dashes in\n       webbrowser.open() URLs to prevent command-line option injection\n       in browser subprocesses\n     - CVE-2026-4519",
        "title": "Details"
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      "id": "CLSA-2026:1776436355",
      "initial_release_date": "2026-04-17T14:33:16Z",
      "revision_history": [
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          "date": "2026-04-17T14:33:16Z",
          "number": "1",
          "summary": "Initial version"
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    },
    "title": "Fix CVE(s): CVE-2026-4519"
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    {
      "cve": "CVE-2026-4519",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "description",
          "text": "The webbrowser.open() API would accept leading dashes in the URL which \ncould be handled as command line options for certain web browsers. New \nbehavior rejects leading dashes. Users are recommended to sanitize URLs \nprior to passing to webbrowser.open().",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "Ubuntu-20:alt-python27-tools-0:2.7.18-14.amd64"
        ]
      },
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        {
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          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els-alt-python/cve/CVE-2026-4519"
        },
        {
          "category": "external",
          "summary": "https://github.com/python/cpython/commit/3681d47a440865aead912a054d4599087b4270dd",
          "url": "https://github.com/python/cpython/commit/3681d47a440865aead912a054d4599087b4270dd"
        },
        {
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          "summary": "https://github.com/python/cpython/commit/43fe06b96f6a6cf5cfd5bdab20b8649374956866",
          "url": "https://github.com/python/cpython/commit/43fe06b96f6a6cf5cfd5bdab20b8649374956866"
        },
        {
          "category": "external",
          "summary": "https://github.com/python/cpython/commit/591ed890270c5697b013bf637029fb3e6cd2d73e",
          "url": "https://github.com/python/cpython/commit/591ed890270c5697b013bf637029fb3e6cd2d73e"
        },
        {
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          "summary": "https://github.com/python/cpython/commit/594b5a05dc9913880ac92eded440defbf32a28d1",
          "url": "https://github.com/python/cpython/commit/594b5a05dc9913880ac92eded440defbf32a28d1"
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        },
        {
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          "summary": "https://github.com/python/cpython/commit/89bfb8e5ed3c7caa241028f1a4eac5f6275a46a4",
          "url": "https://github.com/python/cpython/commit/89bfb8e5ed3c7caa241028f1a4eac5f6275a46a4"
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        {
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          "summary": "https://github.com/python/cpython/commit/9669a912a0e329c094e992204d6bdb8787024d76",
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        },
        {
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          "summary": "https://github.com/python/cpython/commit/ad4d5ba32af4d80b0dfa2ba9d8203bfb219e60a5",
          "url": "https://github.com/python/cpython/commit/ad4d5ba32af4d80b0dfa2ba9d8203bfb219e60a5"
        },
        {
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          "summary": "https://github.com/python/cpython/commit/cbba6119391112aba9c5aebf7b94aea447922c48",
          "url": "https://github.com/python/cpython/commit/cbba6119391112aba9c5aebf7b94aea447922c48"
        },
        {
          "category": "external",
          "summary": "https://github.com/python/cpython/commit/cc023511238ad93ecc8796157c6f9139a2bb2932",
          "url": "https://github.com/python/cpython/commit/cc023511238ad93ecc8796157c6f9139a2bb2932"
        },
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          "summary": "https://github.com/python/cpython/commit/ceac1efc66516ac387eef2c9a0ce671895b44f03",
          "url": "https://github.com/python/cpython/commit/ceac1efc66516ac387eef2c9a0ce671895b44f03"
        },
        {
          "category": "external",
          "summary": "https://github.com/python/cpython/issues/143930",
          "url": "https://github.com/python/cpython/issues/143930"
        },
        {
          "category": "external",
          "summary": "https://github.com/python/cpython/pull/143931",
          "url": "https://github.com/python/cpython/pull/143931"
        },
        {
          "category": "external",
          "summary": "https://mail.python.org/archives/list/security-announce@python.org/thread/AY5NDSS433JK56Q7Q5IS7B37QFZVVOUS/",
          "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/AY5NDSS433JK56Q7Q5IS7B37QFZVVOUS/"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2026/03/20/1",
          "url": "http://www.openwall.com/lists/oss-security/2026/03/20/1"
        }
      ],
      "release_date": "2026-03-20T15:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-04-17T14:32:38.746064Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els-alt-python/releases/CLSA-2026:1776436355",
          "product_ids": [
            "Ubuntu-20:alt-python27-0:2.7.18-14.amd64",
            "Ubuntu-20:alt-python27-debug-0:2.7.18-14.amd64",
            "Ubuntu-20:alt-python27-devel-0:2.7.18-14.amd64",
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            "Ubuntu-20:alt-python27-libs-0:2.7.18-14.amd64",
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            "Ubuntu-20:alt-python27-tkinter-0:2.7.18-14.amd64",
            "Ubuntu-20:alt-python27-tools-0:2.7.18-14.amd64"
          ],
          "url": "https://cve.tuxcare.com/els-alt-python/releases/CLSA-2026:1776436355"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Ubuntu-20:alt-python27-0:2.7.18-14.amd64",
            "Ubuntu-20:alt-python27-debug-0:2.7.18-14.amd64",
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            "Ubuntu-20:alt-python27-test-0:2.7.18-14.amd64",
            "Ubuntu-20:alt-python27-tkinter-0:2.7.18-14.amd64",
            "Ubuntu-20:alt-python27-tools-0:2.7.18-14.amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ]
    }
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}