CVE-2026-101908

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Source
https://cve.org/CVERecord?id=CVE-2026-101908
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101908.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-101908
Aliases
Downstream
CGA (162)
CLEANSTART (3)
CLSA (6)
DEBIAN (1)
ECHO (1)
MINI (18)
RHSA (3)
UBUNTU (1)
Published
2026-09-28T17:38:55Z
Modified
2026-10-21T02:54:27Z
Severity
  • 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
Axios: Prototype pollution gadget in fetch adapter can alter outbound requests
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-1321"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101908.json"
}
References

Affected packages

Git / github.com/axios/axios

Affected ranges

Type
GIT
Repo
https://github.com/axios/axios
Events
Introduced
3041c61adaaac6d2c43eba28c134e7f4d43ab012
Fixed
84a9f3b9a4f3244b8c8e818f557d64c7b964fb25
Fixed
d19040bda7a8be2f82c3c6e1a5bc03917daee39a
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "1.7.0"
                },
                {
                    "fixed":  "1.20.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "d19040bda7a8be2f82c3c6e1a5bc03917daee39a"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.20.0",
            "range":  [
                {
                    "fixed":  "84a9f3b9a4f3244b8c8e818f557d64c7b964fb25"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v1.*
v1.10.0
v1.11.0
v1.12.0
v1.12.1
v1.12.2
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.13.4
v1.13.5
v1.13.6
v1.14.0
v1.15.0
v1.15.1
v1.15.2
v1.16.0
v1.16.1
v1.17.0
v1.18.0
v1.18.1
v1.19.0
v1.7.0
v1.7.1
v1.7.2
v1.7.3
v1.7.4
v1.7.5
v1.7.6
v1.7.7
v1.7.8
v1.7.9
v1.8.0
v1.8.1
v1.8.2
v1.8.3
v1.8.4
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101908.json"