CVE-2012-2126

mediumpriority · track · 17EPSS 0.014 · 72 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.36% (72nd) EPSS

CVSS 4.3 · medium

Is it mine?

31 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

RubyGems before 1.8.23 does not verify an SSL certificate, which allows remote attackers to modify a gem during installation via a man-in-the-middle attack.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedrubygems-0:1.8.24-4.el6op.noarch as a component of RHOSE Client 1.2redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2013:1203
Fixedrubygems-0:1.8.24-4.el6op.noarch as a component of RHOSE Infrastructure 1.2redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2013:1203
Fixedrubygems-0:1.8.24-4.el6op.noarch as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2013:1203
Fixedrubygems-0:1.8.24-4.el6op.src as a component of RHOSE Client 1.2redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2013:1203
Fixedrubygems-0:1.8.24-4.el6op.src as a component of RHOSE Infrastructure 1.2redhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2013:1203
Fixedrubygems-0:1.8.24-4.el6op.src as a component of Red Hat OpenShift Enterprise Noderedhat_csaf
Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258
https://access.redhat.com/errata/RHSA-2013:1203

cvss

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

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–4.3

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v2.03.7lowAV:N/AC:M/Au:N/C:N/I:P/A:N/E:Usecondary · CVSS-BT (t0sche)

v2.04mediumAV:N/AC:H/Au:N/C:P/I:P/A:Nsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-310USprimary

affected products (31)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
rubygems rubygems≤ 1.8.22nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.0nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.1nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.10nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.11nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.12nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.13nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.14nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.15nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.16nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.17nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.18nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.19nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.2nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.20nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.21nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.3nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.4nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
rubygems rubygems= 1.8.5nvdUScpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*

showing 20 of 31

advisories (2)

Vendor and ecosystem advisories describing this.

RHSA-2013:1203Red Hat Security Advisory: rubygems security update2013-09-04csaf · redhat_csafUS
An updated rubygems package that fixes two security issues is now available for Red Hat OpenShift Enterprise 1.2.2. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
GHSA-5mgj-mvv8-46mwRubyGems does not verify SSL certificate2022-05-17ghsa · osvUS
RubyGems before 1.8.23 does not verify an SSL certificate, which allows remote attackers to modify a gem during installation via a man-in-the-middle attack.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd redhat_csaf osv NVD CVE.org MITRE

published 2013-10-01modified 2026-06-16

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references (24)

External citations — patches, advisories, analysis.

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