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FKIE_CVE-2026-43827

Vulnerability from fkie_nvd - Published: 2026-05-25 21:16 - Updated: 2026-07-24 10:10
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Summary
Default configurations of Apache Shiro have a session fixation vulnerability. This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1. Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue. In the affected versions, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID.
References
security@apache.orghttps://shiro.apache.org/security-reports.html#cve_2026_43827Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/05/25/6Mailing List, Third Party Advisory
Impacted products
Vendor Product Version
apache shiro *
apache shiro 3.0.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.shiro:shiro-core",
          "product": "Apache Shiro",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "2.1.0",
              "status": "affected",
              "version": "1.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "3.0.0-alpha-1",
              "status": "affected",
              "version": "3.0.0-alpha-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@apache.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "732C70AE-03A5-43A3-AC55-D81BEF469C20",
              "versionEndExcluding": "2.1.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:apache:shiro:3.0.0:alpha1:*:*:*:*:*:*",
              "matchCriteriaId": "C79C762D-108B-4C23-BEAF-0115D43D83BD",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Default configurations of Apache Shiro have a session fixation vulnerability.\n\nThis issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1.\n\nUsers are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue.\n\nIn the affected versions, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID."
    },
    {
      "lang": "es",
      "value": "Las configuraciones predeterminadas de Apache Shiro tienen una vulnerabilidad de fijaci\u00f3n de sesi\u00f3n.\n\nEste problema afecta a Apache Shiro desde 1.0 hasta 2.1.0, y 3.0.0-alpha-1.\n\nSe recomienda a los usuarios actualizar a la versi\u00f3n 2.1.1, o 3.0.0-alpha-2 o posterior, que soluciona el problema.\n\nEn las versiones afectadas, cuando una sesi\u00f3n ya existe, no se invalida tras un inicio de sesi\u00f3n exitoso, ni se genera una nueva sesi\u00f3n con un nuevo ID."
    }
  ],
  "id": "CVE-2026-43827",
  "lastModified": "2026-07-24T10:10:00.197",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "YES",
          "Recovery": "USER",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "AMBER",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "NONE",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:L/U:Amber",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "LOW"
        },
        "source": "security@apache.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-43827",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-26T12:39:33.503346Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-25T21:16:34.700",
  "references": [
    {
      "source": "security@apache.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://shiro.apache.org/security-reports.html#cve_2026_43827"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2026/05/25/6"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-384"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}



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