CVE-2026-34454

Source
https://cve.org/CVERecord?id=CVE-2026-34454
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34454.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-34454
Aliases
Downstream
Published
2026-04-14T22:10:37.901Z
Modified
2026-07-08T08:12:51.285526753Z
Severity
  • 3.5 (Low) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
Summary
OAuth2 Proxy: Session cookie not cleared when rendering sign-in page
Details

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

Database specific
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34454.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-384",
        "CWE-613"
    ]
}
References

Affected packages

Git / github.com/oauth2-proxy/oauth2-proxy

Affected ranges

Type
GIT
Repo
https://github.com/oauth2-proxy/oauth2-proxy
Events
Database specific
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:oauth2_proxy_project:oauth2_proxy:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "7.11.0"
        },
        {
            "fixed": "7.15.2"
        }
    ]
}

Affected versions

v7.*
v7.11.0
v7.12.0
v7.13.0
v7.14.0
v7.14.1
v7.14.2
v7.14.3
v7.15.0
v7.15.1

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34454.json"