CVE-2026-101908Axios: Prototype pollution gadget in fetch adapter can alter outbound requests
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 6.9 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-1321
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
axios axios axios:axios (from the name) | from 1.7.0, < 1.20.0 | CNA record |
References
- https://github.com/axios/axios/security/advisories/GHSA-vh66-26gq-q6x8x-refsource-confirm
- https://github.com/axios/axios/pull/11141x-refsource-misc
- https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39ax-refsource-misc
- https://github.com/axios/axios/releases/tag/v1.20.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.