VulnerabilityModified
CVE-2021-32816
ProtonMail Web Client before version 3.16.60 has a regular expression denial-of-service vulnerability.
HIGH 7.5EPSS 1.01%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.01% probability · 61th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- protonmail/protonmail
- Source
- security-advisories@github.com
References
- https://github.com/ProtonMail/WebClient/commit/6687fbb867ef872c96cf4fde68cb6e9c58d3fddcPatch, Third Party Advisory
- https://securitylab.github.com/advisories/GHSL-2021-027-redos-ProtonMail/Exploit, Third Party Advisory
- https://github.com/ProtonMail/WebClient/commit/6687fbb867ef872c96cf4fde68cb6e9c58d3fddcPatch, Third Party Advisory
- https://securitylab.github.com/advisories/GHSL-2021-027-redos-ProtonMail/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.