High severity · published Sep 28, 2026
CVE-2026-101901
Axios: Denial of Service via Unhandled 'error' Event in HTTP/2 ClientHttp2Session Initialization
8.2
CVSS
0.5%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AX
axios · axios
>= 1.13.0, < 1.20.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101901
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101901
x_refsource_CONFIRM
https://github.com/axios/axios/security/advisories/GHSA-542g-h47m-68v8
x_refsource_MISC
https://github.com/axios/axios/pull/11141
x_refsource_MISC
https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a
x_refsource_MISC
https://github.com/axios/axios/releases/tag/v1.20.0
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