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Medium, CVSS 6.3amended

Axios has a NO_PROXY Hostname Normalization Bypass that Leads to SSRF

CVE-2025-62718GHSA-3p68-rc4w-qgx5

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (axios 1.15.0, 0.31.0), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm axios

    Affected
    >= 1.0.0, < 1.15.0< 0.31.0
    Fixed in
    0.31.0, 1.15.0

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
6.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N · score source
EPSS
  • CVE-2025-62718: 1.19% estimated exploitation activity in the next 30 days; percentile 67.90 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Axios does not correctly handle hostname normalization when checking NOPROXY rules. Requests to loopback addresses like localhost. (with a trailing dot) or [::1] (IPv6 literal) skip NOPROXY matching and go through the configured proxy. This goes against what developers expect and lets attackers force requests through a proxy, even if NOPROXY is set up to protect loopback or internal services. According to RFC 1034 §3.1 and RFC 3986 §3.2.2, a hostname can have a trailing dot to show it is a fully qualified domain name (FQDN). At the DNS level, localhost. is the same as localhost. However, Axios does a literal string comparison instead of normalizing hostnames before checking NOPROXY. This causes requests like http://localhost.:8080/ and http://[::1]:8080/ to be incorrectly proxied. This issue leads to the possibility of proxy bypass and SSRF vulnerabilities allowing attackers to reach sensitive loopback or internal services despite the configured protections. --- PoC Expected:…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-3p68-rc4w-qgx5

  2. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 1 · created ·

    Published from osv record GHSA-3p68-rc4w-qgx5

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2025-62718

Advisory: Axios has a NO_PROXY Hostname Normalization Bypass that Leads to SSRF
IDs: CVE-2025-62718, GHSA-3p68-rc4w-qgx5
Record: https://patchnext.com/advisories/cve-2025-62718 (revision 3, source checked 26 Oct 2026, 12:48 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: axios 1.15.0, 0.31.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm axios: affected >= 1.0.0, < 1.15.0; < 0.31.0; fixed in 0.31.0, 1.15.0

## Suggested inspection (read-only)
- `npm ls axios --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on axios.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-3p68-rc4w-qgx5 (OSV record GHSA-3p68-rc4w-qgx5 lists affected ranges: npm axios >=1.0.0 =0 <0.31.0 (fixed))
- Verified: https://github.com/advisories/GHSA-3p68-rc4w-qgx5 (GitHub-reviewed advisory GHSA-3p68-rc4w-qgx5 lists affected ranges: npm axios >=1.0.0 =0 <0.31.0)

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