{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43827", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-05-02T22:26:19.626Z", "datePublished": "2026-05-25T20:19:03.428Z", "dateUpdated": "2026-05-25T21:26:12.053Z"}, "containers": {"cna": {"affected": [{"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"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Rasmus Moorats <xx@nns.ee>"}, {"lang": "en", "type": "remediation developer", "value": "Lenny Primak <lenny@flowlogix.com>"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p><span style=\"background-color: rgb(255, 255, 255);\">Default configurations of Apache Shiro have a s</span>ession fixation vulnerability.</p><p>This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1.</p><p>Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue.</p>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.<br><br>"}], "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."}], "metrics": [{"cvssV4_0": {"Automatable": "YES", "Recovery": "USER", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 5.9, "baseSeverity": "MEDIUM", "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/AU:Y/R:U/RE:L/U:Amber", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "LOW"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-384", "description": "CWE-384 Session Fixation", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-05-25T20:19:03.428Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://shiro.apache.org/security-reports.html#cve_2026_43827"}], "source": {"discovery": "EXTERNAL"}, "title": "Apache Shiro: Session fixation: new session is not created after login by default", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/05/25/6"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-05-25T21:26:12.053Z"}}]}}

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{"created": "2026-05-25T21:30:06.141676+00:00", "updated": "2026-05-25T21:30:06.141686+00:00", "vendors": []}