What is CVE-2021-37860?

CVE-2021-37860 is a low-severity vulnerability in Mattermost, classified under Cross-site Scripting. CVSS score: 3.7/10. Published 2021-09-22.

How severe is CVE-2021-37860?

Low severity. CVSS v3 base score is 3.7 out of 10.

XSS in Mattermost

CVE-2021-37860

Mattermost 5.38 and earlier fails to sufficiently sanitize clipboard contents, which allows a user-assisted attacker to inject arbitrary web script in product deployments that explicitly disable the default CSP.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (46.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Mattermost — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

responsibledisclosure@mattermost.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-37860?: CVE-2021-37860 is a low-severity vulnerability in Mattermost, classified under Cross-site Scripting. CVSS score: 3.7/10. Published 2021-09-22.
How severe is CVE-2021-37860?: Low severity. CVSS v3 base score is 3.7 out of 10.