CVE-2024-11023: Firebase JavaScript SDK utilizes a "FIREBASE_DEFAULTS" cookie to store configuration data, including an "_auth

Q: How do I fix CVE-2024-11023?

firebase javascript sdk: upgrade to 10.9.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-11023 being exploited?

CVE-2024-11023 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-11023 affect?

CVE-2024-11023 affects firebase javascript sdk. Severity is medium (CVSS 6.1). 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 att

Q: How urgent is CVE-2024-11023?

Priority 22/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2024-11023 is a medium-severity flaw (CVSS 6.1) affecting firebase javascript sdk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-11-18
Last modified	2026-06-17

Publisher (CNA): Google Inc. · Vendor: google

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-18 11:15 UTCPublished CVE record published
2026-06-17 06:56 UTCUpdated Record last modified

google firebase javascript sdk UPGRADE

Affected: < 10.9.0

Fixed in: 10.9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy firebase-javascript-sdk || rpm -q firebase-javascript-sdk || firebase-javascript-sdk --version

2. UPGRADE to 10.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade firebase-javascript-sdk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade firebase-javascript-sdk

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-11023?

firebase javascript sdk: upgrade to 10.9.0. Exact commands for each OS are on this page.

Is CVE-2024-11023 being exploited?

CVE-2024-11023 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-11023 affect?

CVE-2024-11023 affects firebase javascript sdk. Severity is medium (CVSS 6.1). 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 att

How urgent is CVE-2024-11023?

Priority 22/100. No elevated risk signals yet.

References

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