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TI-2021-05919 Aliases CVE-2021-23127GHSA-8rrc-xf7x-g3cf

[20210301] - Core - Insecure randomness within 2FA secret generation

Priority MEDIUM 42Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An issue was discovered in Joomla! 3.2.0 through 3.9.24. Usage of an insufficient length for the 2FA secret accoring to RFC 4226 of 10 bytes vs 20 bytes.

Why it matters now

EPSS 0.0138 72nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Joomla!Joomla! CMS3.2.0-3.9.24—No fix listedCNA
  • Joomla! CMS VendorJoomla! Affected 3.2.0-3.9.24 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*3.2.0 to before 3.9.25VulnerableJoomla!
  • cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:* Versions 3.2.0 to before 3.9.25 Vulnerable ·Joomla!

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Joomla! CMS — developer.joomla.org/security-centre/841-20210301-core-inse…

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-05918 [20210301] - Core - Insecure randomness within 2FA secret generationPriority LOW 26
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-23127
  2. 2026-10-03 Alias added: GHSA-8rrc-xf7x-g3cf

References

Advisory 1

  • TI-2016-08118 The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow… KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-06410 SQL injection vulnerability in Joomla! 3.7.x before 3.7.1 allows attackers to execute… CVSS 3.0CRITICAL 9.8
  • TI-2016-08129 The isMail transport in PHPMailer before 5.2.20 might allow remote attackers to pass… CVSS 3.1CRITICAL 9.8
  • TI-2016-07280 The register method in the UsersModelRegistration class in controllers/user.php in the… CVSS 3.0CRITICAL 9.8
  • TI-2023-09555 [20230201] - Core - Improper access check in webservice endpoints KEVCVSS 3.1MEDIUM 5.3
  • TI-2015-07045 Joomla! 1.5.x, 2.x, and 3.x before 3.4.6 allow remote attackers to conduct PHP object… CVSS 2.0HIGH 7.5
See all 339 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences