CVE-2026-101908: medium-severity vulnerability in axios
Axios: Prototype pollution gadget in fetch adapter can alter outbound requests
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.4%
exploitation probability
0.4%top 67% of all CVEs
observed exploitation
nono source reports it
Axios is a promise-based HTTP client for the browser and Node.js. From 1.7.0 until 1.20.0, the fetch adapter constructs a Request with sanitized resolvedOptions but then calls fetch with the original fetchOptions. A separate same-process prototype-pollution flaw populates Object.prototype.headers so fetchOptions.headers resolves through inheritance. The inherited fetchOptions.headers value overrides the sanitized Request headers through the second argument to fetch after Request construction. Attacker-controlled request headers can alter authorization, caching, metadata-service access, or application-specific behavior. This issue is fixed in version 1.20.0.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N
Affected products
axios · axiosRelated CVEs — axios
In the same product, most dangerous first.
CVE-2019-10742—CVE-2019-10742EPSS 6.1%CVE-2026-25639HIGHAxios affected by Denial of Service via __proto__ Key in mergeConfigEPSS 2.0%CVE-2026-40175MEDIUMAxios has Unrestricted Cloud Metadata Exfiltration via Header Injection ChainEPSS 1.3%CVE-2025-62718MEDIUMAxios has a NO_PROXY Hostname Normalization Bypass that Leads to SSRFEPSS 1.2%CVE-2025-58754HIGHAxios is vulnerable to DoS attack through lack of data size checkEPSS 1.1%CVE-2026-44495HIGHAxios: Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config MergeEPSS 1.0%