cve-2026-59882

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright © Red Hat, Inc. All rights reserved.",
      "tlp": {
        "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 Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "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"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59882.json"
      }
    ],
    "title": "guzzlehttp/psr7: guzzlehttp/psr7: URI host validation flaw can lead to security bypass or misrouting",
    "tracking": {
      "current_release_date": "2026-07-10T20:44:53+00:00",
      "generator": {
        "date": "2026-07-10T20:44:53+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.2"
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      },
      "id": "CVE-2026-59882",
      "initial_release_date": "2026-07-08T15:50:03.077000+00:00",
      "revision_history": [
        {
          "date": "2026-07-08T15:50:03.077000+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-07-10T20:41:03+00:00",
          "number": "2",
          "summary": "Current version"
        },
        {
          "date": "2026-07-10T20:44:53+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "category": "vendor",
        "name": "Red Hat",
        "product": {
          "name": "All currently supported Red Hat products",
          "product_id": "red_hat_products",
          "product_identification_helper": {
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        }
      }
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-59882",
      "discovery_date": "2026-07-08T17:02:27.640021+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "red_hat_products"
          ]
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in guzzlehttp/psr7, a PHP library for HTTP messages. The Uri::assertValidHost() function fails to properly validate URI host components, allowing for the inclusion of authority delimiters, embedded ports, or malformed IPv6 brackets. This improper validation can lead to discrepancies between the URI host and the authority used for security or routing decisions, potentially enabling security bypasses or misrouting of requests.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.",
          "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-2026-59882"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-59882",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-59882"
        }
      ],
      "release_date": "2026-07-08T15:50:03.077000+00:00",
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "red_hat_products"
          ]
        }
      ],
      "title": "guzzlehttp/psr7: guzzlehttp/psr7: URI host validation flaw can lead to security bypass or misrouting"
    }
  ]
}