CVE-2015-3900

mediumpriority · track · 23EPSS 0.089 · 95 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

8.87% (95th) EPSS

CVSS 5 · medium

Is it mine?

46 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

RubyGems 2.0.x before 2.0.16, 2.2.x before 2.2.4, and 2.4.x before 2.4.7 does not validate the hostname when fetching gems or making API requests, which allows remote attackers to redirect requests to arbitrary domains via a crafted DNS SRV record, aka a "DNS hijack attack."

cvss

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

5.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v2.04.3mediumAV:N/AC:L/Au:N/C:N/I:P/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-254USprimaryCWE-350US

affected products (46)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
oracle solaris= 11.3nvdUScpe:2.3:o:oracle:solaris:*:*:*:*:*:*:*:*
redhat enterprise linux= 6.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 7.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
ruby-lang ruby= 1.9nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 1.9.1nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 1.9.2nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 1.9.3nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.0.0nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.1nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.1.1nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.1.2nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.1.3nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.1.4nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.1.5nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
ruby-lang ruby= 2.2.0nvdUScpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
rubygems rubygems= 2.0.0nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 2.0.1nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 2.0.10nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 2.0.11nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*

showing 20 of 46

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-wp3j-rvfp-624hRubyGems vulnerable to DNS hijack attack2022-05-14ghsa · osvUS
RubyGems 2.0.x before 2.0.16, 2.2.x before 2.2.4, and 2.4.x before 2.4.7 does not validate the hostname when fetching gems or making API requests, which allows remote attackers to redirect requests to arbitrary domains via a crafted DNS SRV record, aka a "DNS hijack attack."

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 2015-06-24modified 2026-06-17

related (800)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2024-21351US	—OT critical	27.8% (98th)	KEV	2024-02-13
Windows SmartScreen Security Feature Bypass Vulnerability
CVE-2023-36025US	high8.8OT critical	88.1% (100th)	KEV	2023-11-14
Windows SmartScreen Security Feature Bypass Vulnerability
CVE-2023-36584US	—OT critical	3.25% (88th)	KEV	2023-10-10
Windows Mark of the Web Security Feature Bypass Vulnerability
CVE-2023-32049US	—OT critical	4.16% (91st)	KEV	2023-07-11
Windows SmartScreen Security Feature Bypass Vulnerability
CVE-2023-24880US	—OT critical	78.0% (100th)	KEV	2023-03-14
Windows SmartScreen Security Feature Bypass Vulnerability

+795 more

references (33)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan