CVE-2019-11940 is a critical use-after-free vulnerability affecting Facebook's Proxygen library (versions v0.29.0 to v2017.04.03.00). It arises from improper handling of HPACK header table resize operations within the HTTP/2 protocol, leading to a corrupted state and undefined behavior. With a CVSS score of 9.8, this vulnerability is highly severe, allowing unauthenticated attackers to achieve high confidentiality, integrity, and availability impacts over the network with low attack complexity. Despite its critical nature, there is no evidence of active exploitation, public exploit code, or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 0.29.0, <= 2017.04.03.00CPE matchmatch criteria | cpe:2.3:a:facebook:proxygen:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.