Vulnerability · Published May 14, 2021 · Assigned by GitHub_M
CVE-2021-32816Regular expression Denial of Service in ProtonMail
Medium 6.5
In plain English
A medium-severity uncontrolled resource consumption in WebClient from ProtonMail. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)1.0%top 36.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ProtonMail | WebClient | < 3.16.60 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H