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CWE-1321Weakness · CWE-1321

CVE-2025-63703

CRITICAL · 9.8 CVSS v3.1 Published 2026-05-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
npm package parse-ini v1.0.6 is vulnerable to Prototype Pollution in index.js().

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

The parse-ini npm package v1.0.6 contains a Prototype Pollution vulnerability in index.js that allows attackers to modify Object.prototype by injecting malicious properties through crafted INI file content during parsing.

MitigationUpdate parse-ini to the latest patched version or replace with a secure alternative; audit all usages of parse-ini and validate/sanitize INI input before parsing.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify parse-ini installation
    Run 'npm list parse-ini' or check for 'parse-ini' in your package.json dependencies section
    Affected if parse-ini is listed as a dependency
  2. Check installed version
    Run 'npm list parse-ini' and note the version number shown, or inspect node_modules/parse-ini/package.json version field
    Affected if Version is 1.0.6 exactly
  3. Determine if INI parsing is used
    Search your codebase for require('parse-ini') or import statements referencing parse-ini, and trace where the parsed output is used
    Affected if Codebase uses parse-ini to parse INI content
  4. Assess INI source trust
    Review the code paths that feed data into parse-ini and identify whether the INI content originates from untrusted sources such as user uploads, external APIs, or configuration files from untrusted locations
    Affected if Untrusted INI content is passed to parse-ini without sanitization

If parse-ini version 1.0.6 is installed and processes untrusted INI content, the environment is affected by this prototype pollution vulnerability

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update parse-ini to the latest patched version or replace with a secure alternative; audit all usages of parse-ini and validate/sanitize INI input before parsing.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing3.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,210
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-63703 in production — separate from our analysis above.

No notes yet

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What this is

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What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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