How severe is CVE-2026-44489?

CVE-2026-44489 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-44489 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44489?

CVE-2026-44489 affects Axios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44489?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-44489 have an EU (EUVD) identifier?

Yes. CVE-2026-44489 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36256.

When was CVE-2026-44489 published?

CVE-2026-44489 was published on 2026-06-11 and last updated on 2026-06-17.

CVE-2026-44489

CVE-2026-44489 is a low-severity vulnerability in Axios with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-113.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36256
Weakness: CWE-113
Affected product: Axios
Published: 2026-06-11
Last modified: 2026-06-17

Description

Axios is a promise based HTTP client for the browser and Node.js. From 1.15.2 to before 1.16.0, nested objects created by utils.merge() (e.g., config.proxy) are still constructed as plain {} with Object.prototype in their chain. The setProxy() function at lib/adapters/http.js:209-223 reads proxy.username, proxy.password, and proxy.auth without hasOwnProperty checks. When Object.prototype.username is polluted, setProxy() constructs a Proxy-Authorization header with attacker-controlled credentials and injects it into every proxied HTTP request. This vulnerability is fixed in 1.16.0.

Frequently asked questions

What is CVE-2026-44489?: Axios is a promise based HTTP client for the browser and Node.js. From 1.15.2 to before 1.16.0, nested objects created by utils.merge() (e.g., config.proxy) are still constructed as plain {} with Object.prototype in their chain. The setProxy() function at lib/adapters/http.js:209-223 reads proxy.username, proxy.password, and proxy.auth without hasOwnProperty checks. When Object.prototype.username is polluted, setProxy() constructs a Proxy-Authorization header with attacker-controlled credentials and injects it into every proxied HTTP request. This vulnerability is fixed in 1.16.0.
How severe is CVE-2026-44489?: CVE-2026-44489 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-44489 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44489?: CVE-2026-44489 affects Axios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44489?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-44489 have an EU (EUVD) identifier?: Yes. CVE-2026-44489 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36256.
When was CVE-2026-44489 published?: CVE-2026-44489 was published on 2026-06-11 and last updated on 2026-06-17.

References

https://github.com/axios/axios/security/advisories/GHSA-654m-c8p4-x5fp

Affected products (1)

cpe:2.3:a:axios:axios:1.15.2:*:*:*:*:node.js:*:*

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