Firebase JavaScript SDK allows attackers to manipulate the "_authTokenSyncURL" to point to their own server
Firebase JavaScript SDK utilizes a "FIREBASE_DEFAULTS" cookie to store configuration data, including an "_authTokenSyncURL" field used for session synchronization. If this cookie field is preset via an attacker by any other method, the attacker can manipulate the "_authTokenSyncURL" to point to their own server and it would allow am actor to capture user session data transmitted by the SDK. We recommend upgrading Firebase JS SDK at least to 10.9.0.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | firebase | < 10.9.0 | 10.9.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-11023
- https://github.com/firebase/firebase-js-sdk/pull/8056
- https://github.com/firebase/firebase-js-sdk/commit/245dd26e19b6c16aca7e1b7e597ed5784c2984ba
- https://firebase.google.com/support/release-notes/js#version_1090_-_march_14_2024
- https://github.com/firebase/firebase-js-sdk
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-79- Platform
- npm
- Package
firebase- Disclosed
- 18.11.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-3wf4-68gx-mph8 - CC BY 4.0
Vulnerability history: firebase
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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