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vuln-cve/data/2026/62xxx/CVE-2026-62367.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-62367",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-07-13T22:04:59.677Z",
"datePublished": "2026-10-09T20:49:08.891Z",
"dateUpdated": "2026-10-13T20:25:26.027Z"
},
"containers": {
"cna": {
"title": "Vikunja: OIDC email-fallback account linking ignores email_verified, enabling local-account takeover",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"lang": "en",
"description": "CWE-287: Improper Authentication",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-290",
"lang": "en",
"description": "CWE-290: Authentication Bypass by Spoofing",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-345",
"lang": "en",
"description": "CWE-345: Insufficient Verification of Data Authenticity",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-xv7q-fvmc-jx96",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-xv7q-fvmc-jx96"
},
{
"name": "https://github.com/go-vikunja/vikunja/commit/7854f2729ab72000210b61c25929678fd6901630",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/go-vikunja/vikunja/commit/7854f2729ab72000210b61c25929678fd6901630"
},
{
"name": "https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0"
}
],
"affected": [
{
"vendor": "go-vikunja",
"product": "vikunja",
"versions": [
{
"version": ">= 1.0.0, < 2.4.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-10-09T20:49:08.891Z"
},
"descriptions": [
{
"lang": "en",
"value": "Vikunja is an open-source self-hosted task management platform. In versions 1.0.0 through 2.3.0, when an administrator enables the per-provider `emailfallback` option on an OpenID Connect provider, Vikunja links an SSO login to a pre-existing local (username+password) account using only the `email` claim from the IdP. The fallback never checks an `email_verified` (or Microsoft `xms_edov`) signal and never requires the matched account's password. An attacker who can obtain a token from the configured issuer carrying a victim's email logs in as that victim with a full session, with no consent or interaction from the victim. Version 2.4.0 fixes the issue."
}
],
"source": {
"advisory": "GHSA-xv7q-fvmc-jx96",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-10-13T20:14:20.538444Z",
"id": "CVE-2026-62367",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-10-13T20:25:26.027Z"
}
}
]
}
}