{
    "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"
                }
            }
        ]
    }
}