CVE-2020-18378 is a NULL pointer dereference vulnerability in Binaryen 1.38.26, specifically within the SExpressionWasmBuilder::makeBlock function, affecting WebAssembly binaryen. A specially crafted WebAssembly input can trigger a segmentation fault, resulting in a denial-of-service condition. Rated as Medium severity (CVSS 6.5), it requires user interaction (UI:R) but can be exploited remotely (AV:N) with low attack complexity (AC:L), leading to high availability impact (A:H). There is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.38.26CPE matchmatch criteria | cpe:2.3:a:webassembly:binaryen:1.38.26:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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.
Remediation records are not available for this CVE.