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.
References (2)
Core 2
Core References
Exploit, Third Party Advisory x_refsource_confirm
https://securitylab.github.com/advisories/GHSL-2021-027-redos-ProtonMail/
Patch, Third Party Advisory x_refsource_misc
https://github.com/ProtonMail/WebClient/commit/6687fbb867ef872c96cf4fde68cb6e9c58d3fddc
Scores
CVSS v3
6.5
EPSS
0.0101
EPSS Percentile
58.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Details
CWE
CWE-400
Status
published
Products (1)
protonmail/protonmail
< 3.16.60
Published
May 14, 2021
Tracked Since
Feb 18, 2026