Vulnerability Monitor

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CVE-2021-21338

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 it has been discovered that Login Handling is susceptible to open redirection which allows attackers redirecting to arbitrary content, and conducting phishing attacks. No authentication is required in order to exploit this vulnerability. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.7, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 1 product from typo3 organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-03-23T02:15:12.360

Last Modified

2024-11-21T05:48:03.290

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

4.9

Weaknesses

Type: Secondary
CWE-601

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	typo3	typo3	< 6.2.57	Yes
Application	typo3	typo3	< 7.6.51	Yes
Application	typo3	typo3	< 8.7.40	Yes
Application	typo3	typo3	< 9.5.25	Yes
Application	typo3	typo3	< 10.4.14	Yes
Application	typo3	typo3	< 11.1.1	Yes

References

https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-4jhw-2p6j-5wmp Third Party Advisory ([email protected])
https://packagist.org/packages/typo3/cms-core Release Notes, Third Party Advisory ([email protected])
https://typo3.org/security/advisory/typo3-core-sa-2021-001 Vendor Advisory ([email protected])
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-4jhw-2p6j-5wmp Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://packagist.org/packages/typo3/cms-core Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://typo3.org/security/advisory/typo3-core-sa-2021-001 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For typo3's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.