Axios: ReDoS (O(N²)) in shouldBypassProxy host normalization, reachable via untrusted redirect Location

Date Sep 30, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product npm · axios
CVE CVE-2026-101906
High-risk advisory CVE-2026-101906

Summary

Axios: ReDoS (O(N²)) in shouldBypassProxy host normalization, reachable via untrusted redirect Location

Why it matters

GitHub has published a reviewed security advisory for axios. Prioritize it with other application dependency updates, especially because EPSS places it in the 32% percentile.

Operator check

Check whether axios is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.2. EPSS probability: 0.4%; percentile: 32%.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.