XSS in Portainer

CVE-2021-42650

Cross Site Scripting (XSS vulnerability exists in Portainer before 2.9.1 via the node input box in Custom Templates.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (47.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Portainer
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-42650?: CVE-2021-42650 is a medium-severity vulnerability in Portainer, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-10-18.
How severe is CVE-2021-42650?: Medium severity. CVSS v3 base score is 6.1 out of 10.