vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2021-23128

[20210302] - Core - Potential Insecure FOFEncryptRandval

CRITICAL
9.1
CVSS Score
Published: March 4, 2021 at 05:37 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorJoomla!

Using Joomla! CMS by Joomla! Project?

Get instant alerts when new vulnerabilities affect Joomla! CMS - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
CRITICAL9.1
Exploit prediction
EPSS 1%

Description

An issue was discovered in Joomla! 3.2.0 through 3.9.24. The core shipped but unused randval implementation within FOF (FOFEncryptRandval) used an potential insecure implemetation. That has now been replaced with a call to 'random_bytes()' and its backport that is shipped within random_compat.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Joomla!· Joomladrupal
95%
3.2.0 ≤ v < 3.9.253.2.0-3.9.24
Affected range stops below 3.9.25, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://developer.joomla.org/security-centre/842-20210302-core-potential-insecure-fofencryptrandval.html

CVSS

9.1CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card