CVE-2026-101903

See a problem?
Please try reporting it to the source first.
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
Published
2026-09-28T17:25:04Z
Modified
2026-09-30T03:47:03Z
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
d19040bda7a8be2f82c3c6e1a5bc03917daee39a
Fixed
84a9f3b9a4f3244b8c8e818f557d64c7b964fb25
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "1.16.1"
        },
        {
            "fixed":  "1.20.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

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"