CVE-2026-33994 is a prototype pollution vulnerability found in the `parse_str` function of the npm package `locutus`, affecting versions 2.0.39 through 3.0.24. An attacker can bypass a security guard by overriding `RegExp.prototype.test` with a crafted query string, a flaw stemming from an incomplete fix for a previous CVE. Rated Medium with a CVSSv4 score of 6.3, this vulnerability has a network attack vector and low attack complexity, requiring no privileges or user interaction, and can lead to a low impact on system integrity. There is no evidence of active exploitation, no public exploit code available, and community discussion is minimal, reflected in a very low EPSS score. The issue is resolved in version 3.0.25.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.0.39, < 3.0.25CPE matchmatch criteria | cpe:2.3:a:locutus:locutus:*:*:*:*:*:node.js:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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.