Summary When Object.prototype has been polluted by any co-dependency with keys that axios reads without a hasOwnProperty guard, an attacker can (a) silently intercept and modify every JSON response before the applicatio…
| CVE ID | CVE-2026-42033 |
| Vendor | npm |
| Affected Product | axios |
| Vulnerability Type | Vulnerability |
| CVSS Score | 7.4 (HIGH) |
| Actively Exploited | ❌ No known exploitation |
| Patch Status | See Vendor Advisory → |
| Reported By | CYBERDUDEBIVASH SENTINEL APEX Intelligence (via github_advisories) |
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Object.prototype has been polluted by any co-dependency with keys that axios reads without a hasOwnProperty guard, an attacker can (a) silently intercept and modify every JSON response before the application sees it, or (b) fully hijack the underlying HTTP transport, gaining access to request credentials, headers, and body. The precondition is prototype pollution from a separate source in the same process -- lodash = 1.12.0, { console.log('[server] request:', req.method, req.url); res.writeHead(200, { 'Content-Type': 'application/json' }); res.end(JSON.stringify({ role: 'user', balance: 100, token: 'tok_real_abc' }));}); server.listen(19003, '127.0.0.1', () => { console.log('[server] listening on 127.0.0.1:19003'); }); `` `` $ node server_gadget1.mjs [server] listeni
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