# CVE-2026-101901: Axios: Denial of Service  via Unhandled 'error' Event in HTTP/2 ClientHttp2Session Initialization

> CVE-2026-101901: Axios: Denial of Service via Unhandled 'error' Event in HTTP/2 ClientHttp2Session Initialization. CVSS 8.2 (CVSS 4.0).

Canonical: https://rewindex.com/cve/CVE-2026-101901
Last updated: 2026-10-01T15:17:24Z

- Published: 2026-09-28 17:16 UTC · Updated: 2026-10-01 15:17 UTC · Assigner: GitHub\_M
- CVSS: 8.2 (CVSS 4.0) · Severity: High
- EPSS: 0.54%, 45th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-400

## Description

Axios is a promise-based HTTP client for the browser and Node.js. From 1.13.0 until 1.20.0, Http2Sessions does not install adequate error handling for a ClientHttp2Session during Axios HTTP/2 session initialization or reuse. A request uses httpVersion: 2 and the ClientHttp2Session emits an error during session initialization or reuse. The unhandled session error escapes normal Promise rejection handling. The uncaught error can terminate the Node.js process and cause denial of service. This issue is fixed in version 1.20.0.

## Affected vendors and products

- axios: axios

## Tracked companies

- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-101901)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-101901)
- [https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a](https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a)
- [https://github.com/axios/axios/pull/11141](https://github.com/axios/axios/pull/11141)
- [https://github.com/axios/axios/releases/tag/v1.20.0](https://github.com/axios/axios/releases/tag/v1.20.0)
- [https://github.com/axios/axios/security/advisories/GHSA-542g-h47m-68v8](https://github.com/axios/axios/security/advisories/GHSA-542g-h47m-68v8)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-101901 · Markdown: https://rewindex.com/cve/CVE-2026-101901.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-101901 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:13.489Z