What’s Vulnerable › Vulnerabilities

CVE-2026-67321: axios 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 Denial of Service via maxDepth bypass

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-08-01 · updated 2026-09-01
• Weakness: CWE-674

Description

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.

Affected products

• axios: from 0.31.1 before 0.33.0; from 1.15.1 before 1.18.0 — fixed in 0.33.0, 1.18.0

How to fix

Upgrade to a fixed version: axios 0.33.0, 1.18.0. Check the vendor advisory for mitigations.

References

• https://github.com/axios/axios/security/advisories/GHSA-hcpx-6fm6-wx23
• https://www.vulncheck.com/advisories/axios-before-denial-of-service-via-maxdepth-bypass
• https://github.com/axios/axios/security/advisories/GHSA-hcpx-6fm6-wx23

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