Detections
Analytics

SCA: security update for firebase/php-jwt (GHSA-8xf4-w7qw-pjjw)

critical Tenable Cloud Security Plugin ID 412928

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In Firebase PHP-JWT before 6.0.0, an algorithm-confusion issue (e.g., RS256 / HS256) exists via the kid
 (aka Key ID) header, when multiple types of keys are loaded in a key ring. This allows an attacker to
 forge tokens that validate under the incorrect key. NOTE: this provides a straightforward way to use the
 PHP-JWT library unsafely, but might not be considered a vulnerability in the library itself.
 (CVE-2021-46743)

See Also

https://github.com/advisories/GHSA-8xf4-w7qw-pjjw

Plugin Details

Severity: Critical

ID: 412928

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.04

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2021-46743

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/30/2022

Vulnerability Publication Date: 3/29/2022

Reference Information

CVE: CVE-2021-46743