Answer in brief
CVE-2026-101899 records a Medium severity (CVSS 6.9) vulnerability in Axios: CIDR-form NO_PROXY entries are ignored, causing proxy exclusion bypass for internal IP ranges. The current sources do not mark it as known exploited. The current feed maps axios/axios (generic), axios (npm), axios (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps axios/axios (generic), axios (npm), axios (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| axios/axiosgeneric | >=1.15.0 <1.20.0 | 1.20.0 |
| axiosnpm | >=1.15.0,<1.20.0 | 1.20.0 |
| axiosnpm | >=1.15.0 <1.20.0 | 1.20.0 |
Published upstream
Oct 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 30, 2026
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 NO_PROXY CIDR form as a textual hostname suffix instead of evaluating the network range. A request targets an address covered by a CIDR entry in NO_PROXY while a proxy is configured. The CIDR bypass rule is not matched, so the request is sent through the configured proxy. For plaintext HTTP, the proxy can observe and modify URLs, headers, and bodies; for HTTPS, it can observe connection metadata and CONNECT requests. This issue is fixed in version 1.20.0.
Quoted source text, attributed separately from HOL analysis.