Vulnerability in Axios
CVE-2026-67321
axios versions 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 contain an incomplete depth-limit bypass in toFormData.js when serializing objects with top-level keys ending in '{}'. Attackers who control object keys and nested values passed to axios form or parameter serialization can trigger a RangeError from JSON.stringify, causing denial of service in the affected request path.
EPSS: 0.004 (29.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Axios — versions 0.31.1, 0.33.0, 1.15.1
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, vendor-advisory, Vendor Advisory)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-67321?
- CVE-2026-67321 is a high-severity vulnerability in Axios, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-08-01.
- How severe is CVE-2026-67321?
- High severity. CVSS v3 base score is 7.5 out of 10.