CVE-2026-52841

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Source

https://cve.org/CVERecord?id=CVE-2026-52841

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52841.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-52841

Aliases

GHSA-8hm4-r66f-29wr

Published

2026-07-14T15:27:50.367Z

Modified

2026-07-16T03:48:36.869221065Z

Severity

3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N CVSS Calculator

Summary

Easy!Appointments: Authorization bypass in Google OAuth provider binding lets any backend user rebind a peer provider's Google sync

Details

Easy!Appointments is a self hosted appointment scheduler. In versions prior to 1.6.0, Google::oauth at application/controllers/Google.php:278 stores its URL-supplied provider_id in the session, and oauth_callback saves the issued Google OAuth token against that row without checking the caller owns the provider. Any logged-in backend user (admin, provider, or secretary) rebinds a peer provider's Google sync to a Google account they control. The peer's appointments then sync into the attacker's calendar with each customer's name and email attached as attendee data. Version 1.6.0 patches the issue.

Database specific

{
    "cwe_ids": [
        "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52841.json",
    "cna_assigner": "GitHub_M"
}

References

Affected packages

Git / github.com/alextselegidis/easyappointments

Affected ranges

Type

GIT

Repo

https://github.com/alextselegidis/easyappointments

Events

Introduced

Fixed

4b2d245d2cd2058dc76e05f6eb65b26699268471

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.6.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*

1.1.0

1.1.0-beta.2

1.2.0-alpha.1

1.2.0-beta.1

1.3.0-alpha.1

1.3.0-beta.1

1.3.0-beta.2

1.5.0

1.5.0-alpha.1

1.5.0-beta.1

1.5.0-dev.1

1.5.0-dev.2

1.5.0-dev.3

1.5.0-dev.4

1.5.1

1.5.1-beta.1

1.5.2-beta.1

1.6.0-alpha.1

1.6.0-beta.1

1.6.0-beta.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52841.json"