Proxy identity spoofing via inherited credential properties
Published Jun 11, 2026 · Updated Jun 11, 2026
HTTP header injection in Axios 1.15.2 allows remote attackers to add attacker-controlled proxy credentials to proxied Node.js requests. The utils.merge() path rebuilds config.proxy as a plain object, and setProxy() trusts inherited username, password, and auth properties when forming Proxy-Authorization. Exploitation requires a separately polluted Object.prototype and an explicit proxy configuration; it can spoof proxy identity, poison audit logs, or cause request failures.
Summary
What happened
HTTP header injection in Axios 1.15.2 allows remote attackers to add attacker-controlled proxy credentials to proxied Node.js requests. The utils.merge() path rebuilds config.proxy as a plain object, and setProxy() trusts inherited username, password, and auth properties when forming Proxy-Authorization. Exploitation requires a separately polluted Object.prototype and an explicit proxy configuration; it can spoof proxy identity, poison audit logs, or cause request failures.
The record
- CVE
- CVE-2026-44489
- Published
- Jun 11, 2026
- Updated
- Jun 11, 2026
- Vendor
- Axios
- Product
- Axios
- Classifications
- CWE-113, CWE-1321, T1036
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 11, 2026CVE publishedPublication date reported by the CVE source.
- Jun 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.15.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Axios 1.15.2 Proxy-Authorization injection proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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