CVE-2017-0909

highpriority · track · 40EPSS 0.020 · 81 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.03% (81st) EPSS

CVSS 7.5 · high

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

The private_address_check ruby gem before 0.4.1 is vulnerable to a bypass due to an incomplete blacklist of common private/local network addresses used to prevent server-side request forgery.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-184USCWE-184US

affected products (3)

Products and version ranges known to be affected.

HackerOne private_address_check ruby gem≤ Versions before 0.4.1enisa_euvdEU
private address check project private address check< 0.4.1nvdUScpe:2.3:a:private_address_check_project:private_address_check:*:*:*:*:*:*:*:*
RubyGems private_address_check< 0.4.1osvUSpkg:gem/private_address_check

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-3v3c-r5v2-68phprivate_address_check contains Incomplete List of Disallowed Inputs2017-11-30ghsa · osvUS
The private_address_check ruby gem before 0.4.1 is vulnerable to a bypass due to an incomplete blacklist of common private/local network addresses used to prevent server-side request forgery.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2017-11-16modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

https://github.com/jtdowney/private_address_check/pull/3 cnnvd
https://hackerone.com/reports/288950 cnnvd
https://github.com/jtdowney/private_address_check/pull/3 enisa_euvd
https://hackerone.com/reports/288950 enisa_euvd
https://github.com/jtdowney/private_address_check/pull/3Issue TrackingThird Party Advisorynvd
https://hackerone.com/reports/288950Issue TrackingPatchThird Party Advisorynvd

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