What is CVE-2021-32816?

CVE-2021-32816 is a medium-severity vulnerability in Protonmail, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2021-05-14.

How severe is CVE-2021-32816?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Protonmail

CVE-2021-32816

ProtonMail Web Client is the official AngularJS web client for the ProtonMail secure email service. ProtonMail Web Client before version 3.16.60 has a regular expression denial-of-service vulnerability. This was fixed in commit 6687fb. There is a full report available in the referenced GHSL-2021-027.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.010 (59.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Protonmail
Protonmail Webclient — versions < 3.16.60

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-32816?: CVE-2021-32816 is a medium-severity vulnerability in Protonmail, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2021-05-14.
How severe is CVE-2021-32816?: Medium severity. CVSS v3 base score is 6.5 out of 10.