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vuln-cve/data/2026/56xxx/CVE-2026-56091.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-56091",
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"state": "PUBLISHED",
"assignerShortName": "apache",
"dateReserved": "2026-06-18T17:12:37.896Z",
"datePublished": "2026-06-25T08:45:19.426Z",
"dateUpdated": "2026-06-25T12:10:34.365Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "org.apache.shiro:shiro-guice",
"product": "Apache Shiro",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThanOrEqual": "2.99.99",
"status": "affected",
"version": "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": "LocalHost <localhost.detect@gmail.com>"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Lenny Primak <lenny@flowlogix.com>"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass.<br>This vulnerability is similar to <a target=\"_blank\" rel=\"nofollow\" href=\"https://www.cve.org/CVERecord?id=CVE-2020-1957[CVE-2020-1957\">https://www.cve.org/CVERecord?id=CVE-2020-1957</a>, except that it affects the `shiro-guice` module instead of the `shiro-spring` module.<br><br>This issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.<br><br>Upgrade to version 3.0.0 or later, which fixes the issue.<br>"
}
],
"value": "When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request may cause an authentication bypass.\nThis vulnerability is similar to https://www.cve.org/CVERecord?id=CVE-2020-1957 https://www.cve.org/CVERecord , except that it affects the `shiro-guice` module instead of the `shiro-spring` module.\n\nThis issue affects all Apache Shiro versions through 2.x, and 3.0.0-alpha-1 only when using `shiro-guice` module in a web servlet context.\n\nUpgrade to version 3.0.0 or later, which fixes the issue."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "YES",
"Recovery": "NOT_DEFINED",
"Safety": "PRESENT",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "AMBER",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "DIFFUSE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/V:D/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-289",
"description": "CWE-289 Authentication Bypass by Alternate Name",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache",
"dateUpdated": "2026-06-25T08:45:19.426Z"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://lists.apache.org/thread/onmtxmy2qonbpx7xlw3o34x8sctv47r7"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Apache Shiro: Authentication bypass in Guice-Web integration",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-25T12:10:08.791843Z",
"id": "CVE-2026-56091",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-06-25T12:10:34.365Z"
}
}
]
}
}