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CVE Record

CVE-2020-28360: Insufficient RegEx in private-ip npm package v1.0.5 and below insufficiently filters reserved IP ranges res...

Insufficient RegEx in private-ip npm package v1.0.5 and below insufficiently filters reserved IP ranges resulting in indeterminate SSRF. An attacker can perform a large range of requests to ARIN reserved IP ranges, resulting in an indeterminable number of critical attack vectors, allowing remote attackers to request server-side resources or potentially execute arbitrary code through various SSRF techniques.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

The reported issue is in the npm package private-ip version 1.0.5 and below. Its regex-based filtering may fail to block some reserved IP ranges, weakening applications that rely on it to prevent server-side requests to sensitive resources.

Executive priority

Treat as a focused dependency and SSRF-control review. Urgency is higher for internet-facing services that accept user-supplied URLs or proxy requests from untrusted users.

Technical view

CVE-2020-28360 describes insufficient reserved-range filtering in private-ip <=1.0.5, creating SSRF risk when applications trust the package to classify destinations. The source bundle does not provide CVSS, CWE, fixed-version, or confirmed affected application details.

Likely exposure

Exposure is likely limited to Node.js applications that include private-ip <=1.0.5 and use it in request validation, URL filtering, proxying, webhooks, or other outbound server-side fetch paths.

Exploitation context

The bundle does not show CISA KEV listing or other evidence of active exploitation. The described impact is SSRF against ARIN reserved ranges, with potential downstream impact depending on application network access and reachable internal services.

Researcher notes

Evidence is sparse: no CVSS vector, CWE, patch statement, or exploit confirmation is included. Prioritize dependency presence, call-site purpose, and compensating egress controls before assigning business impact.

Mitigation direction

  • Identify and remove reliance on private-ip <=1.0.5 for SSRF protection.
  • Check npm and GitHub vendor guidance for fixed versions or replacement direction.
  • Add independent allowlist-based outbound request controls where possible.
  • Enforce network egress blocking to internal and reserved address space.
  • Review any server-side fetch, proxy, webhook, or URL-preview features.

Validation and detection

  • Search dependency manifests and lockfiles for private-ip and its resolved version.
  • Map every code path that uses private-ip to approve outbound destinations.
  • Confirm SSRF protections do not rely solely on regex-based IP classification.
  • Test application controls with benign reserved-range validation cases.
  • Verify network controls block unexpected server-side access to restricted destinations.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2020-28360 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.