Server-Side Request Forgery (SSRF) in axios - #VU136908
Published: July 6, 2026
Vulnerability identifier: #VU136908
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: axios
Affected software:
axios
axios
Detailed vulnerability description
The vulnerability allows a remote attacker to perform server-side request forgery and disclose sensitive information.
The vulnerability exists due to improper input validation in shouldBypassProxy when handling requests to loopback-equivalent addresses. A remote attacker can supply a crafted URL using 0.0.0.0, ::, or ::ffff:0.0.0.0 to perform server-side request forgery and disclose sensitive information.
Exploitation requires an Axios client configured with a proxy and relying on NO_PROXY=localhost for loopback protection.
Remediation
Install security update from vendor's website.