Answer in brief
CVE-2021-3749 records a High severity (CVSS 7.5) vulnerability in axios Inefficient Regular Expression Complexity vulnerability. The current sources do not mark it as known exploited. The current feed maps 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 7.5. 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 (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| axiosnpm | >=0 <0.21.2 | 0.21.2 |
Published upstream
Sep 1, 2021
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 2, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Sep 5, 2026
axios before v0.21.2 is vulnerable to Inefficient Regular Expression Complexity.
Quoted source text, attributed separately from HOL analysis.