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High

axios Inefficient Regular Expression Complexity vulnerability

  • Disclosed: 01.09.2021
  • Updated: 11.10.2026 10:22

axios before v0.21.2 is vulnerable to Inefficient Regular Expression Complexity.

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package axios < 0.21.2 0.21.2

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-1333, CWE-400
Platform
npm
Package
axios
Disclosed
01.09.2021
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-cph5-m8f7-6c5x - CC BY 4.0

Vulnerability history: axios

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (55) in the archive
Total entries
55
First → latest
05.2019 09.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 25
  • Medium 28
  • Low 2

Disclosures per year

Severity:
  1. axios Inefficient Regular Expression Complexity vulnerability this entry
    High · 7.5 CVE-2021-3749 < 0.21.2 0.21.2
  2. Axios: Node HTTP adapter prototype-pollution gadget allows request socket hijack via inherited createConnection
    High CVE-2026-101905 >= 1.15.2, < 1.20.0 1.20.0
  3. Axios: maxRedirects: 0 is not enforced by the fetch adapter, allowing redirect-based SSRF
    High CVE-2026-101907 >= 1.17.0, < 1.20.0 1.20.0
  4. Axios: ReDoS in fromDataURI data: URL parser freezes the Node event loop (DoS)
    High CVE-2026-101903 >= 1.16.1, < 1.20.0 1.20.0
  5. Axios: ReDoS (O(N²)) in shouldBypassProxy host normalization, reachable via untrusted redirect Location
    High CVE-2026-101906 >= 1.15.0, < 1.20.0 1.20.0
  6. Axios: Prototype Pollution Gadget in axios toFormData Options
    High CVE-2026-101909 >= 0.28.0, < 0.34.0, >= 1.15.1, < 1.20.0 0.34.0, 1.20.0
  7. Axios: HTTP/2 adapter bypasses configured DNS lookup and proxy controls
    High CVE-2026-101898 >= 1.13.0, < 1.20.0 1.20.0
  8. Axios: Denial of Service via Unhandled 'error' Event in HTTP/2 ClientHttp2Session Initialization
    High CVE-2026-101901 >= 1.13.0, < 1.20.0 1.20.0
  9. Axios Node HTTP adapter can use an inherited proxy after interceptor config cloning
    High CVE-2026-67320 >= 0.31.1, < 0.33.0, >= 1.15.2, < 1.18.0 0.33.0, 1.18.0
  10. Axios: Regular Expression Denial of Service (ReDoS) via Cookie Name Injection
    High · 7.5 CVE-2026-44496 >= 1.0.0, < 1.16.0, < 0.32.0 1.16.0, 0.32.0
  11. Allocation of Resources Without Limits or Throttling in Axios
    High · 7.5 CVE-2026-44488 >= 1.7.0, < 1.16.0 1.16.0
  12. Axios: Proxy-Authorization Credential Leak to Origin Server Across HTTP-to-HTTPS Redirect in Axios Node.js HTTP Adapter
    High CVE-2026-44487 >= 1.0.0, < 1.16.0, < 0.32.0 1.16.0, 0.32.0
  13. Axios: Proxy-Authorization header leaks to redirect target when proxy is re-evaluated to direct connection
    High · 7.5 CVE-2026-44486 >= 1.0.0, < 1.16.0, < 0.32.0 1.16.0, 0.32.0
  14. axios Vulnerable to Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Merge
    High · 7.0 CVE-2026-44495 >= 1.0.0, < 1.15.2, >= 0.19.0, < 0.31.1 1.15.2, 0.31.1
  15. axios Vulnerable to Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`
    High · 8.7 CVE-2026-44494 >= 1.0.0, < 1.16.0 1.16.0
  16. axios's shouldBypassProxy does not recognize IPv4-mapped IPv6 addresses, allowing NO_PROXY bypass (incomplete fix for CVE-2025-62718)
    High · 8.6 CVE-2026-44492 >= 1.15.0, < 1.16.0, < 0.32.0 1.16.0, 0.32.0
  17. Axios: Prototype Pollution Gadgets - Response Tampering, Data Exfiltration, and Request Hijacking
    High · 7.4 CVE-2026-42033 >= 1.0.0, < 1.15.1, < 0.31.1 1.15.1, 0.31.1
  18. Axios: Header Injection via Prototype Pollution
    High · 7.4 CVE-2026-42035 >= 1.0.0, < 1.15.1, < 0.31.1 1.15.1, 0.31.1
  19. Axios: Incomplete Fix for CVE-2025-62718 — NO_PROXY Protection Bypassed via RFC 1122 Loopback Subnet (127.0.0.0/8) in Axios 1.15.0
    High · 7.2 CVE-2026-42043 >= 1.0.0, < 1.15.1, < 0.31.1 1.15.1, 0.31.1
  20. Axios has prototype pollution read-side gadgets in HTTP adapter that allow credential injection and request hijacking
    High · 7.4 CVE-2026-42264 >= 1.0.0, < 1.15.2 1.15.2
  21. Axios is Vulnerable to Denial of Service via __proto__ Key in mergeConfig
    High · 7.5 CVE-2026-25639 >= 1.0.0, < 1.13.5, < 0.30.3 1.13.5, 0.30.3
Show more (4) Showing 21 of 25

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