cve-2026-59883

{
  "document": {
    "category": "csaf_vex",
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      "text": "Copyright © Red Hat, Inc. All rights reserved.",
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    "lang": "en",
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        "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 Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
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    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
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    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59883.json"
      }
    ],
    "title": "guzzle/guzzle: Guzzle: Cross-host cookie disclosure and injection due to improper domain matching in CookieJar.",
    "tracking": {
      "current_release_date": "2026-07-29T11:22:15+00:00",
      "generator": {
        "date": "2026-07-29T11:22:15+00:00",
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          "name": "Red Hat SDEngine",
          "version": "5.3.7"
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      },
      "id": "CVE-2026-59883",
      "initial_release_date": "2026-07-08T15:56:03.689000+00:00",
      "revision_history": [
        {
          "date": "2026-07-08T15:56:03.689000+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-07-29T11:17:31+00:00",
          "number": "2",
          "summary": "Current version"
        },
        {
          "date": "2026-07-29T11:22:15+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
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        "name": "Red Hat",
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-59883",
      "discovery_date": "2026-07-08T17:01:01.591362+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "red_hat_products"
          ]
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Guzzle, an extensible PHP HTTP client. The CookieJar component improperly handled cookies for IP-address or bare-numeric domains, failing to restrict them to the exact host. This vulnerability could allow a remote attacker to disclose cookies across different hosts, inject malicious cookies, or fixate user sessions, potentially leading to unauthorized access or session hijacking.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "Red Hat's products are not affected by this flaw because the guzzlehttp/guzzle PHP library is not shipped in any Red Hat product.",
          "title": "Statement"
        },
        {
          "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": {
        "known_not_affected": [
          "red_hat_products"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-59883"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-59883",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-59883"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-59883",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59883"
        },
        {
          "category": "external",
          "summary": "https://github.com/guzzle/guzzle/commit/b9944c161b12d9ee9c9334cfc5b9659ecd7451f8",
          "url": "https://github.com/guzzle/guzzle/commit/b9944c161b12d9ee9c9334cfc5b9659ecd7451f8"
        },
        {
          "category": "external",
          "summary": "https://github.com/guzzle/guzzle/pull/3694",
          "url": "https://github.com/guzzle/guzzle/pull/3694"
        },
        {
          "category": "external",
          "summary": "https://github.com/guzzle/guzzle/releases/tag/7.12.3",
          "url": "https://github.com/guzzle/guzzle/releases/tag/7.12.3"
        },
        {
          "category": "external",
          "summary": "https://github.com/guzzle/guzzle/security/advisories/GHSA-g446-98w2-8p5w",
          "url": "https://github.com/guzzle/guzzle/security/advisories/GHSA-g446-98w2-8p5w"
        }
      ],
      "release_date": "2026-07-08T15:56:03.689000+00:00",
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "red_hat_products"
          ]
        }
      ],
      "title": "guzzle/guzzle: Guzzle: Cross-host cookie disclosure and injection due to improper domain matching in CookieJar."
    }
  ]
}