CVE-2021-21320

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.92% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 60.0% of scored records. A rank, not a probability.

NVD base score

4.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-03-02 02:45Z5 YR AGO

Last updated

2024-08-03 18:09Z2 YR AGO

Reserved

2020-12-22

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Low (CVSS 2.6)

CNA CVSS vector

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

Weaknesses

• CWE-345Insufficient Verification of Data AuthenticityClass

Data version

5.1

Document digest

698c135cb1d26c9b2fffc7ab322d2aef0c11db3b7ba8c17faddee73a7ba85966

• github.comhttps://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-52mq-6jcv-j79xx_refsource_CONFIRM
• github.comhttps://github.com/matrix-org/matrix-react-sdk/pull/5657x_refsource_MISC
• github.comhttps://github.com/matrix-org/matrix-react-sdk/commit/b386f0c73b95ecbb6ea7f8f79c6ff5171a8dedd1x_refsource_MISC
• www.npmjs.comhttps://www.npmjs.com/package/matrix-react-sdkx_refsource_MISC