CVE-2021-32816 describes a regular expression denial-of-service (ReDoS) vulnerability affecting the ProtonMail Web Client prior to version 3.16.60. This flaw could allow an unauthenticated attacker to remotely trigger a denial-of-service condition. With a CVSS score of 7.5 (High), the vulnerability is easily exploitable over the network with low attack complexity, leading to high availability impact. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.16.60CPE matchmatch criteria | cpe:2.3:a:protonmail:protonmail:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.