How severe is CVE-2018-1000075?

CVE-2018-1000075 has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2018-1000075?

CVE-2018-1000075 affects the following packages: org.jruby:jruby-stdlib (Maven), rubygems-update (RubyGems). Ecosystems affected: Maven, RubyGems.

How do I fix CVE-2018-1000075?

Update org.jruby:jruby-stdlib to 9.1.16.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1000075 is resolved across your whole dependency graph.

How do I detect CVE-2018-1000075 in my Maven, RubyGems dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jruby:jruby-stdlib, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2018-1000075 if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is CVE-2018-1000075 actively exploited in the wild?

No public exploit code has been indexed for CVE-2018-1000075 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2018-1000075?

CVE-2018-1000075 has an EPSS (Exploit Prediction Scoring System) score of 4.7%, placing it in the 92th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2018-1000075?

CVE-2018-1000075 is classified as CWE-835 (CWE-835). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2018-1000075 published, and has it been updated?

CVE-2018-1000075 was published on March 13, 2018 and was last updated on October 20, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven💎 RubyGems

Not in CISA KEV

HIGH severity

CVE-2018-1000075 — jruby-stdlib

HIGHFix: rubygems/rubygems@92e98bf

CVE-2018-1000075 is a high-severity (CVSS 7.5) CWE-835 vulnerability in org.jruby:jruby-stdlib. A fix is available for org.jruby:jruby-stdlib — see the affected versions and patch details below.

RubyGems Infinite Loop vulnerability

Also known asGHSA-74pv-v9gh-h25p

Published

Mar 13, 2018

Updated

Oct 20, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

4.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs92th percentile — riskier than 92% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected

☕org.jruby:jruby-stdlib💎rubygems-update

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven, RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a infinite loop caused by negative size vulnerability in ruby gem package tar header that can result in a negative size could cause an infinite loop.. This vulnerability appears to have been fixed in 2.7.6.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.jruby:jruby-stdlib`	all versions	9.1.16.0`org.jruby:jruby-stdlib:9.1.16.0`
💎RubyGems	`rubygems-update`	all versions	2.7.6`bundle update rubygems-update --conservative`

Affected Products

2 products · 5 configurations

debian linuxdebian

1 version

7.0

Application

rubygemsrubygems

≤ 2.5.0

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jruby:jruby-stdlib, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.jruby:jruby-stdlib to 9.1.16.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1000075 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatLow

This issue affects the versions of rubygems as shipped with Red Hat Subscription Asset Manager 1.x. Red Hat Product Security has rated this issue as having security impact of Low. A future update may address this issue. For additional information, refer to the Issue Severity Classification:…

Product	Fixed in	Advisory
Red Hat Enterprise Linux 7	`ruby-0:2.0.0.648-36.el7`	RHSA-2019:2028
Red Hat Enterprise Linux 7.4 Advanced Update Support	`ruby-0:2.0.0.648-35.el7_4`	RHSA-2020:0591
Red Hat Enterprise Linux 7.5 Extended Update Support	`ruby-0:2.0.0.648-35.el7_5`	RHSA-2020:0542
Red Hat Enterprise Linux 7.6 Extended Update Support	`ruby-0:2.0.0.648-36.el7_6`	RHSA-2020:0663
Red Hat Software Collections for Red Hat Enterprise Linux 6	`rh-ruby23-ruby-0:2.3.8-69.el6`	RHSA-2018:3729
Red Hat Software Collections for Red Hat Enterprise Linux 6	`rh-ruby24-ruby-0:2.4.5-91.el6`	RHSA-2018:3730
Red Hat Software Collections for Red Hat Enterprise Linux 7	`rh-ruby25-ruby-0:2.5.3-6.el7`	RHSA-2018:3731

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2018-1000075 in your dependencies?

Find it across Maven, RubyGems, including transitive dependencies.

Scan my dependencies How O3 SCA works