CVE-2020-1892 describes an out-of-bounds read vulnerability in HHVM's JSON parser due to insufficient boundary checks. This flaw, affecting numerous HHVM versions including 4.45.0 and earlier, could lead to information leakage and denial of service. With a CVSS score of 8.1 (High), it can be exploited over the network with low attack complexity, requiring user interaction to trigger. There is currently no public exploit code available, it is not listed in CISA's KEV catalog, and it has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.8.7CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
>= 4.9.0, <= 4.32.0CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
>= 4.33.0, <= 4.38.0CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | ||
4.39.0CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:4.39.0:*:*:*:*:*:*:* | ||
4.40.0CPE matchmatch criteria | cpe:2.3:a:facebook:hhvm:4.40.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 0.1 Security Researcher mentions.