CVE-2021-31778

Name: CVE-2021-31778
Creator: NVD / NIST
Published: 2021-04-28T07:15:07.533+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2021-31778 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The media2click (aka 2 Clicks for External Media) extension 1.x before 1.3.3 for TYPO3 allows XSS by a backend user account.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

The media2click (aka 2 Clicks for External Media) extension 1.x before 1.3.3 for TYPO3 allows XSS by a backend user account.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.53%

40.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Media2click Project	Media2click	>= 1.0.0, < 1.3.3

References

https://typo3.org/security/advisory/typo3-ext-sa-2021-004Patch, Third Party Advisory
https://typo3.org/security/advisory/typo3-ext-sa-2021-004Patch, Third Party Advisory

Timeline

Published: Apr 28, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31778?

The media2click (aka 2 Clicks for External Media) extension 1.x before 1.3.3 for TYPO3 allows XSS by a backend user account.

How severe is CVE-2021-31778?

CVE-2021-31778 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31778?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31778?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST