CVE-2026-101899 Axios: CIDR-form NO_PROXY entries are ignored, causing proxy exclusion bypass for internal IP ranges

Axios is a promise-based HTTP client for the browser and Node.js. From 1.15.0 until 1.20.0, Axios shouldBypassProxy treats the NOPROXY CIDR form as a textual hostname suffix instead of evaluating the network range. A request targets an address covered by a CIDR entry in NOPROXY while a proxy is...

CVE-2026-101899

The Axios HTTP client (versions 1.15.0 through 1.20.0 ) contains a vulnerability where the shouldBypassProxy function incorrectly treats NO_PROXY CIDR entries as textual hostname suffixes instead of evaluating the network range. This causes requests targeting addresses covered by CIDR bypass rule...

Proxy Exclusion Bypass

Axios is vulnerable to Proxy Exclusion Bypass. The vulnerability is due to CIDR-form NOPROXY entries not being interpreted as IP ranges, allowing requests to internal IP addresses to bypass the intended proxy exclusion and be routed through the configured proxy...

NPM: Axios: CIDR-form NO_PROXY entries are ignored, causing proxy exclusion bypass for internal IP ranges

NPM: Axios: CIDR-form NOPROXY entries are ignored, causing proxy exclusion bypass for internal IP ranges vulnerability discovered by ? in WordPress Npm axios versions = 1.15.0, 1.20.0...

Axios: CIDR-form NO_PROXY entries are ignored, causing proxy exclusion bypass for internal IP ranges

Summary Axios supports proxy environment variables and evaluates NOPROXY exclusions in the Node.js adapter. CIDR-form NOPROXY entries such as 127.0.0.0/8, 10.0.0.0/8, or 169.254.169.254/32 are not interpreted as IP ranges. As a result, a request to an IP address inside a configured CIDR exclusion...

GHSA-44G4-M2MJ-WPVX Axios: CIDR-form NO_PROXY entries are ignored, causing proxy exclusion bypass for internal IP ranges

Summary Axios supports proxy environment variables and evaluates NOPROXY exclusions in the Node.js adapter. CIDR-form NOPROXY entries such as 127.0.0.0/8, 10.0.0.0/8, or 169.254.169.254/32 are not interpreted as IP ranges. As a result, a request to an IP address inside a configured CIDR exclusion...

PT-2026-103485

Name of the Vulnerable Software and Affected Versions Axios versions 1.15.0 through 1.19.x Description In the Node.js adapter, the software fails to correctly interpret CIDR notation e.g., 127.0.0.0/8 within the NO PROXY environment variable. Instead of evaluating these as network ranges, the...