How severe is CVE-2026-42038?

CVE-2026-42038 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-42038 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42038?

CVE-2026-42038 affects Axios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42038?

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

Does CVE-2026-42038 have an EU (EUVD) identifier?

Yes. CVE-2026-42038 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25604.

When was CVE-2026-42038 published?

CVE-2026-42038 was published on 2026-04-24 and last updated on 2026-06-17.

CVE-2026-42038

CVE-2026-42038 is a medium-severity vulnerability in Axios with a CVSS 3.x base score of 6.8. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25604
Weakness: CWE-918
Affected product: Axios
Published: 2026-04-24
Last modified: 2026-06-17

Description

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, he fix for no_proxy hostname normalization bypass is incomplete. When no_proxy=localhost is set, requests to 127.0.0.1 and [::1] still route through the proxy instead of bypassing it. The shouldBypassProxy() function does pure string matching — it does not resolve IP aliases or loopback equivalents. This vulnerability is fixed in 1.15.1 and 0.31.1.

Frequently asked questions

What is CVE-2026-42038?: Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, he fix for no_proxy hostname normalization bypass is incomplete. When no_proxy=localhost is set, requests to 127.0.0.1 and [::1] still route through the proxy instead of bypassing it. The shouldBypassProxy() function does pure string matching — it does not resolve IP aliases or loopback equivalents. This vulnerability is fixed in 1.15.1 and 0.31.1.
How severe is CVE-2026-42038?: CVE-2026-42038 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-42038 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42038?: CVE-2026-42038 affects Axios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42038?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-42038 have an EU (EUVD) identifier?: Yes. CVE-2026-42038 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25604.
When was CVE-2026-42038 published?: CVE-2026-42038 was published on 2026-04-24 and last updated on 2026-06-17.

References

https://github.com/axios/axios/security/advisories/GHSA-m7pr-hjqh-92cm

Affected products (1)

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

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Threat intelligence

Threat-intel indicators referencing this CVE:

157.66.35.106 (ipv4-addr)