# CVE-2024-11023: Session Hijacking in Firebase JavaScript SDK

> CVE-2024-11023: Session Hijacking in Firebase JavaScript SDK. CVSS 5.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2024-11023
Last updated: 2026-06-17T06:56:54Z

- Published: 2024-11-18 10:19 UTC · Updated: 2026-06-17 06:56 UTC · Assigner: Google
- CVSS: 5.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS: 0.13%, 2th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-79

## Description

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 an actor to capture user session data transmitted by the SDK. We recommend upgrading Firebase JS SDK at least to 10.9.0.

## Affected vendors and products

- Firebase: JavaScript SDK

## Tracked companies

- [Firebase](https://rewindex.com/company/firebase.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2024-11023)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2024-11023)
- [https://firebase.google.com/support/release-notes/js\#version\_1090\_-\_march\_14\_2024](https://firebase.google.com/support/release-notes/js#version_1090_-_march_14_2024)
- [https://github.com/firebase/firebase-js-sdk/pull/8056](https://github.com/firebase/firebase-js-sdk/pull/8056)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2024-11023 · Markdown: https://rewindex.com/cve/CVE-2024-11023.md · JSON: https://rewindex.com/api/v1/cves/CVE-2024-11023 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:14:48.705Z