Vulnerability in Matrix-Org Matrix-React-Sdk
CVE-2021-21320
matrix-react-sdk is an npm package which is a Matrix SDK for React Javascript. In matrix-react-sdk before version 3.15.0, the user content sandbox can be abused to trick users into opening unexpected documents. The content is opened with a `blob` origin that cannot access Matrix user data, so messages and secrets are not at risk. This has been fixed in version 3.15.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.6 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Matrix-Org Matrix-React-Sdk — versions < 3.15.0
- Matrix-React-Sdk Project
Weakness classification (CWE)
References
- github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-52mq-6jcv-j79x (Third Party Advisory)
- github.com/matrix-org/matrix-react-sdk/pull/5657 (Patch, Third Party Advisory)
- github.com/matrix-org/matrix-react-sdk/commit/b386f0c73b95ecbb6ea7f8f79c6ff5171… (Patch, Third Party Advisory)
- www.npmjs.com/package/matrix-react-sdk (Product, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21320?
- CVE-2021-21320 is a low-severity vulnerability in Matrix-Org Matrix-React-Sdk, classified under Insufficient Verification of Data Authenticity. CVSS score: 2.6/10. Published 2021-03-02.
- How severe is CVE-2021-21320?
- Low severity. CVSS v3 base score is 2.6 out of 10.