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CVE-2021-32622

24
FAUCET Score

CVE-2021-32622 affects the Matrix-React-SDK, a React-based SDK for Matrix chat/VoIP clients, specifically versions prior to 3.21.0. The vulnerability allows for script execution embedded in uploaded files during a local preview, requiring multiple user interactions to open the preview in a separate tab. This is a high-severity vulnerability (CVSS 7.8) with a local attack vector and high impact on confidentiality, integrity, and availability, but it only affects the local user during the upload process. There is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.21.0CPE matchmatch criteria
cpe:2.3:a:matrix-react-sdk_project:matrix-react-sdk:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

4.2MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
0.8
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 28th percentile among its peer group of 11,617 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: matrix-react-sdkFixed in: 3.21.0

Vendor Advisories (1)

npmGHSA-cg57-p69r-3m7pmedium

Improper file handling in matrix-react-sdk

Feb 10, 2022

References

github.com / matrix-org/matrix-react-sdk/pull/5981
PatchThird Party Advisory
github.com / matrix-org/matrix-react-sdk/security/advisories/GHSA-8796-gc9j-63rv
PatchThird Party Advisory