CVE-2018-20840 is an unhandled exception vulnerability in the Google API C++ Client before 2019-04-10, specifically impacting third-party services using Google Sign-In. A malicious user can trigger a denial-of-service by causing the client to misinterpret an integer as a string during ID token handling, preventing other users from logging in. This vulnerability carries a high CVSS score of 8.6, indicating a network-based attack with low complexity and high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2019-04-10CPE matchmatch criteria | cpe:2.3:a:google:api_c\+\+_client:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.