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vuln-cve/data/2026/34xxx/CVE-2026-34454.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-34454",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-03-27T18:18:14.895Z",
"datePublished": "2026-04-14T22:10:37.901Z",
"dateUpdated": "2026-04-15T13:30:10.300Z"
},
"containers": {
"cna": {
"title": "OAuth2 Proxy: Session cookie not cleared when rendering sign-in page",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-613",
"lang": "en",
"description": "CWE-613: Insufficient Session Expiration",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-384",
"lang": "en",
"description": "CWE-384: Session Fixation",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "PHYSICAL",
"availabilityImpact": "NONE",
"baseScore": 3.5,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-f24x-5g9q-753f",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-f24x-5g9q-753f"
},
{
"name": "https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.15.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.15.2"
}
],
"affected": [
{
"vendor": "oauth2-proxy",
"product": "oauth2-proxy",
"versions": [
{
"version": ">= 7.11.0, < 7.15.2",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-04-14T22:14:00.972Z"
},
"descriptions": [
{
"lang": "en",
"value": "OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. A regression introduced in 7.11.0 prevents OAuth2 Proxy from clearing the session cookie when rendering the sign-in page. In deployments that rely on the sign-in page as part of their logout flow, a user may be shown the sign-in page while the existing session cookie remains valid, meaning the browser session is not actually logged out. On shared workstations or devices, a subsequent user could continue to use the previous user's authenticated session. Deployments that use a dedicated logout/sign-out endpoint to terminate sessions are not affected. This issue is fixed in 7.15.2"
}
],
"source": {
"advisory": "GHSA-f24x-5g9q-753f",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-04-15T13:30:00.521921Z",
"id": "CVE-2026-34454",
"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": "2026-04-15T13:30:10.300Z"
}
}
]
}
}