How severe is CVE-2026-67319?

CVE-2026-67319 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-2026-67319 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-67319?

CVE-2026-67319 affects Axios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-67319?

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

When was CVE-2026-67319 published?

CVE-2026-67319 was published on 2026-08-01 and last updated on 2026-09-01.

CVE-2026-67319

CVE-2026-67319 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-1321.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v4: 6.3
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1321
Affected product: Axios
Published: 2026-08-01
Last modified: 2026-09-01

Description

axios before 0.33.0 (and 1.x before 1.18.0) can consume inherited properties from nested request option objects when the JavaScript process's Object.prototype has already been polluted by another component. While the top-level merged config uses a null prototype, nested plain objects such as auth and paramsSerializer are cloned into ordinary objects and read without own-property checks. When an application passes placeholder nested objects such as auth: {} or paramsSerializer: {}, inherited username/password values can cause silent injection of an Authorization: Basic header, and inherited encode/serialize values can alter query-string serialization (full serializer replacement requires a function-valued pollution primitive). This is exploitable only in the presence of pre-existing prototype pollution.

Frequently asked questions

What is CVE-2026-67319?: axios before 0.33.0 (and 1.x before 1.18.0) can consume inherited properties from nested request option objects when the JavaScript process's Object.prototype has already been polluted by another component. While the top-level merged config uses a null prototype, nested plain objects such as auth and paramsSerializer are cloned into ordinary objects and read without own-property checks. When an application passes placeholder nested objects such as auth: {} or paramsSerializer: {}, inherited username/password values can cause silent injection of an Authorization: Basic header, and inherited encode/serialize values can alter query-string serialization (full serializer replacement requires a function-valued pollution primitive). This is exploitable only in the presence of pre-existing prototype pollution.
How severe is CVE-2026-67319?: CVE-2026-67319 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-2026-67319 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-67319?: CVE-2026-67319 affects Axios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-67319?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-67319 published?: CVE-2026-67319 was published on 2026-08-01 and last updated on 2026-09-01.

References

Affected products (1)

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

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Threat intelligence

Threat-intel indicators referencing this CVE:

172.234.29.193 (ipv4-addr)
8.142.178.14 (ipv4-addr)