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CVE-2018-1000077

20
FAUCET Score

CVE-2018-1000077 is an Improper Input Validation vulnerability in RubyGems versions prior to 2.7.6, affecting Ruby 2.2 through 2.5 series. A malicious gem could set an invalid homepage URL within the RubyGems specification. This vulnerability has a CVSS score of 5.3 (MEDIUM), indicating a low-impact integrity issue with no confidentiality or availability impact, and can be exploited remotely without authentication. There is no evidence of active exploitation, public 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

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.77%
Probability of exploitation in next 30 days
EPSS Percentile
88.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0377 is in the 85th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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-gv86-43rv-79m2medium

RubyGems Improper Input Validation vulnerability

May 14, 2022
redhatCVE-2018-1000077Moderate

rubygems: Missing URL validation on spec home attribute allows malicious gem to set an invalid homepage URL

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/feadefc2d351dcb95d6492f5ad17ebca546eb964
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