Is CVE-2017-0904 in the CISA KEV catalog?

No. CVE-2017-0904 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-0904?

CVE-2017-0904 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2017-0904?

CVE-2017-0904 has an EPSS score of 2.42% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-0904?

Upgrade private address check to 0.4.0 or later.

CVE & CISA-KEV Catalog

CVE-2017-0904

HIGHEPSS 82th pctl

8.1

CVSS v3

NVD

Description

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

CWE-242 CWE-755

How to fix

Remediation Available

private address checkNVD

Affected:< 0.4.0Fixed in:0.4.0CVE-2017-0904derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

2.42%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Patch1

hackerone.com

Third-Party Advisory4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.