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CVE-2026-101903

CVE-2026-101903 · Axios: ReDoS in fromDataURI data: URL parser freezes the Node event loop (DoS)

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 8.2 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: system · node

Affected products and versions

  • axios

    Versions
    • >= 1.16.1, < 1.20.0: Affected

    No fix published

  • node-axios Debian:13

    Versions
    • 1.11.0+dfsg-1
    • 1.12.1+dfsg-1
    • 1.13.1+dfsg-1
    • 1.13.2+dfsg-1
    • 1.14.0+dfsg-1
    • 1.15.0-1
    • 1.15.2-1
    • 1.16.0-1
    • 1.18.0-1
    • 1.19.0-1
    • 1.20.0-1
    • 1.8.4+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-axios Debian:14

    Versions
    • 1.11.0+dfsg-1
    • 1.12.1+dfsg-1
    • 1.13.1+dfsg-1
    • 1.13.2+dfsg-1
    • 1.14.0+dfsg-1
    • 1.15.0-1
    • 1.15.2-1
    • 1.16.0-1
    • 1.18.0-1
    • 1.19.0-1
    • 1.8.4+dfsg-1
    Affected ranges
    • ECOSYSTEM: < 1.20.0-1

    Update to 1.20.0-1

  • axios npm

    Affected ranges
    • SEMVER: ≥ 1.16.1, < 1.20.0

    Update to 1.20.0

  • node-axios Ubuntu:Pro:20.04:LTS

    Versions
    • 0.19.0+dfsg-2
    • 0.19.0+dfsg-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-axios Ubuntu:Pro:22.04:LTS

    Versions
    • 0.21.1+dfsg-1
    • 0.23.0+dfsg-2
    • 0.24.0+dfsg-1
    • 0.25.0+dfsg-2
    • 0.26.0+dfsg-1
    • 0.26.0+dfsg-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-axios Ubuntu:Pro:24.04:LTS

    Versions
    • 1.2.1+dfsg-1
    • 1.5.1+dfsg-1
    • 1.6.2+dfsg-1
    • 1.6.8+dfsg-2
    • 1.6.8+dfsg-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-axios Ubuntu:26.10

    Versions
    • 1.13.2+dfsg-1build1
    • 1.16.0-1
    • 1.18.0-1
    • 1.19.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • node-axios Ubuntu:Pro:26.04:LTS

    Versions
    • 1.11.0+dfsg-1
    • 1.12.1+dfsg-1
    • 1.13.2+dfsg-1build1
    • 1.13.2+dfsg-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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