CVE-2018-1000025: Jerome Gamez Firebase Admin SDK for PHP version from 3.2.0 to 3.8.0 contains a Incorrect Access Control vulner

This month

HIGH 8.1REMOTEUPGRADE

CVE-2018-1000025 is a high-severity flaw (CVSS 8.1) affecting firebase admin sdk for php. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Jerome Gamez Firebase Admin SDK for PHP version from 3.2.0 to 3.8.0 contains a Incorrect Access Control vulnerability in src/Firebase/Auth/IdTokenVerifier.php does not verify for token signature that can result in JWT with any email address and user ID could be forged from an actual token, or from thin air. This attack appear to be exploitable via Attacker would only need to know email address of the victim on most cases.. This vulnerability appe

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-732
Published	2018-02-09
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: firebase admin sdk for php project

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

Am I affected?

Timeline

2018-02-09 23:29 UTCPublished CVE record published
2026-06-17 01:32 UTCUpdated Record last modified

firebase admin sdk for php project firebase admin sdk for php UPGRADE

Affected: >= 3.2.0 and <= 3.8.0

Fixed in: newer than 3.8.0

Safe to downgrade to: a release before 3.2.0

1. Check installed version

apt-cache policy firebase-admin-sdk-for-php || rpm -q firebase-admin-sdk-for-php || firebase-admin-sdk-for-php --version

2. UPGRADE to newer than 3.8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade firebase-admin-sdk-for-php

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade firebase-admin-sdk-for-php

Note

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

3. If no update is available yet, DOWNGRADE to a release before 3.2.0 (Debian / Ubuntu)

apt-cache madison firebase-admin-sdk-for-php sudo apt install firebase-admin-sdk-for-php=<VERSION_BEFORE_3.2.0> sudo apt-mark hold firebase-admin-sdk-for-php

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list firebase-admin-sdk-for-php sudo dnf downgrade firebase-admin-sdk-for-php-<VERSION_BEFORE_3.2.0> sudo dnf versionlock add firebase-admin-sdk-for-php

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2018-1000025?

firebase admin sdk for php: upgrade to newer than 3.8.0. Exact commands for each OS are on this page.

Is CVE-2018-1000025 being exploited?

CVE-2018-1000025 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-2018-1000025 affect?

CVE-2018-1000025 affects firebase admin sdk for php. Severity is high (CVSS 8.1). Jerome Gamez Firebase Admin SDK for PHP version from 3.2.0 to 3.8.0 contains a Incorrect Access Control vulnerability in src/Firebase/Auth/IdTokenVerifier.php does not verify for token signature that can result in JWT with any email address

How urgent is CVE-2018-1000025?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

References

← Back to latest CVEs