CVE-2026-42043

CVE-2026-42043 is a high-severity vulnerability in Axios with a CVSS 3.x base score of 7.2. 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-183.

Key facts

Description

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, an attacker who can influence the target URL of an Axios request can use any address in the 127.0.0.0/8 range (other than 127.0.0.1) to completely bypass the NO_PROXY protection. This vulnerability is due to an incomplete for CVE-2025-62718, This vulnerability is fixed in 1.15.1 and 0.31.1.

Frequently asked questions

What is CVE-2026-42043?
Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, an attacker who can influence the target URL of an Axios request can use any address in the 127.0.0.0/8 range (other than 127.0.0.1) to completely bypass the NO_PROXY protection. This vulnerability is due to an incomplete for CVE-2025-62718, This vulnerability is fixed in 1.15.1 and 0.31.1.
How severe is CVE-2026-42043?
CVE-2026-42043 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-42043 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42043?
CVE-2026-42043 affects Axios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42043?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42043 have an EU (EUVD) identifier?
Yes. CVE-2026-42043 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25608.
When was CVE-2026-42043 published?
CVE-2026-42043 was published on 2026-04-24 and last updated on 2026-07-01.

References

Affected products (1)

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Threat intelligence

Threat-intel indicators referencing this CVE: