Protection mechanism failure in axios - CVE-2026-101899
Published: September 17, 2026 / Updated: October 16, 2026
Vulnerability identifier: #VU150721
CSH Severity: High
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-101899
CWE-ID: CWE-693
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to a protection mechanism failure in the Node.js adapter's shouldBypassProxy helper when processing requests with CIDR-form NO_PROXY entries. A remote attacker can cause requests intended to bypass a configured proxy to be routed through it to disclose sensitive information.
Exploitation depends on the configured proxy being outside the intended trust boundary.
Affected software
axios
How to mitigate CVE-2026-101899
Install security update from vendor's website.
axios - update to 1.20.0