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CVE-2018-1000078

21
FAUCET Score

CVE-2018-1000078 describes a Cross-Site Scripting (XSS) vulnerability in RubyGems versions 2.2.9 and earlier, 2.3.6 and earlier, 2.4.3 and earlier, and 2.5.0 and earlier. This flaw allows an attacker to inject malicious scripts into the gem server's display of a gem's homepage attribute. The vulnerability has a CVSS score of 6.1 (Medium), indicating that it requires user interaction (browsing to a malicious gem) and could lead to limited confidentiality and integrity impacts. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.2.9CPE matchmatch criteria
cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
<= 2.3.6CPE matchmatch criteria
cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
<= 2.4.3CPE matchmatch criteria
cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
<= 2.5.0CPE matchmatch criteria
cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.80%
Probability of exploitation in next 30 days
EPSS Percentile
85.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0280 is in the 93rd percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (27)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: org.jruby:jruby-stdlibFixed in: 9.1.16.0
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: ruby-0:2.0.0.648-35.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Telco Extended Update SupportFixed in: ruby-0:2.0.0.648-35.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsFixed in: ruby-0:2.0.0.648-35.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.5 Extended Update SupportFixed in: ruby-0:2.0.0.648-35.el7_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Extended Update SupportFixed in: ruby-0:2.0.0.648-36.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-ruby23-ruby-0:2.3.8-69.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-ruby24-ruby-0:2.4.5-91.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-ruby23-ruby-0:2.3.8-69.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-ruby24-ruby-0:2.4.5-91.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-ruby25-ruby-0:2.5.3-6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-ruby23-ruby-0:2.3.8-69.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-ruby24-ruby-0:2.4.5-91.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-ruby25-ruby-0:2.5.3-6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-ruby23-ruby-0:2.3.8-69.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-ruby24-ruby-0:2.4.5-91.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-ruby25-ruby-0:2.5.3-6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-ruby23-ruby-0:2.3.8-69.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-ruby25-ruby-0:2.5.3-6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-ruby24-ruby-0:2.4.5-91.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ruby-0:2.0.0.648-36.el7
View patch
rubygemspatch availablevia ghsa
Product: rubygems-updateFixed in: 2.7.6
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: rubygems
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: rubygems
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: rubygems
redhatend of lifevia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: ruby193-rubygems

Vendor Advisories (2)

rubygemsGHSA-87qx-g5wg-mwmjmedium

RubyGems Cross-site Scripting vulnerability

May 14, 2022
redhatCVE-2018-1000078Moderate

rubygems: XSS vulnerability in homepage attribute when displayed via gem server

Feb 15, 2018

References

blog.rubygems.org / 2018/02/15/2.7.6-released.html
Vendor Advisory
lists.opensuse.org / opensuse-security-announce/2019-07/msg00036.html
access.redhat.com / errata/RHSA-2018:3729
access.redhat.com / errata/RHSA-2018:3730
access.redhat.com / errata/RHSA-2018:3731
access.redhat.com / errata/RHSA-2019:2028
access.redhat.com / errata/RHSA-2020:0542
access.redhat.com / errata/RHSA-2020:0591
access.redhat.com / errata/RHSA-2020:0663
github.com / rubygems/rubygems/commit/66a28b9275551384fdab45f3591a82d6b59952cb
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2018/04/msg00000.html
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/04/msg00001.html
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/04/msg00023.html
lists.debian.org / debian-lts-announce/2018/07/msg00012.html
lists.debian.org / debian-lts-announce/2019/05/msg00028.html
usn.ubuntu.com / 3621-1
debian.org / security/2018/dsa-4219
debian.org / security/2018/dsa-4259