What is CVE-2021-32622?

CVE-2021-32622 is a medium-severity vulnerability in Matrix-org Matrix-react-sdk, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.2/10. Published 2021-05-17.

How severe is CVE-2021-32622?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Arbitrary file upload in Matrix-org Matrix-react-sdk

CVE-2021-32622

Matrix-React-SDK is a react-based SDK for inserting a Matrix chat/voip client into a web page. Before version 3.21.0, when uploading a file, the local file preview can lead to execution of scripts embedded in the uploaded file. This can on…

EPSS: 0.004 (29.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L.

Affected products

Matrix-org Matrix-react-sdk — versions < 3.21.0
Matrix-react-sdk_project Matrix-react-sdk

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-32622?: CVE-2021-32622 is a medium-severity vulnerability in Matrix-org Matrix-react-sdk, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.2/10. Published 2021-05-17.
How severe is CVE-2021-32622?: Medium severity. CVSS v3 base score is 4.2 out of 10.