CVE-2026-101903

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Source
https://cve.org/CVERecord?id=CVE-2026-101903
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101903.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-101903
Aliases
Downstream
CGA (130)
CLEANSTART (3)
CLSA (5)
DEBIAN (1)
ECHO (1)
MINI (10)
RHSA (3)
ROOT (1)
UBUNTU (1)
Published
2026-09-28T17:25:04Z
Modified
2026-10-28T02:31:01Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Axios: ReDoS in fromDataURI data: URL parser freezes the Node event loop (DoS)
Details

Axios is a promise-based HTTP client for the browser and Node.js. From 1.16.1 until 1.20.0, the RFC 2397 regular expression allows slash characters on both sides of the media-type separator. An application passes an attacker-controlled malformed data URL containing many slash characters and no comma. the JavaScript regular-expression engine explores many separator placements before rejecting the URL. Synchronous excessive backtracking can block the Node.js event loop and cause denial of service. The affected identifiers are fromDataURI, DATA_URL_PATTERN, data:. This issue is fixed in version 1.20.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101903.json"
}
References

Affected packages

Git / github.com/axios/axios

Affected ranges

Type
GIT
Repo
https://github.com/axios/axios
Events
Introduced
1337d6b537afb2d3f501074c8ac4ef4308221197
Fixed
84a9f3b9a4f3244b8c8e818f557d64c7b964fb25
Fixed
d19040bda7a8be2f82c3c6e1a5bc03917daee39a
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "1.16.1"
                },
                {
                    "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.*
v1.16.1
v1.17.0
v1.18.0
v1.18.1
v1.19.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-101903.json"