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Vulnerability Database · Ubuntu · Package report

jruby: vulnerability history, versions and safety

jruby is a package in the Ubuntu ecosystem. Vulert records 22 vulnerabilities for it across 4 releases, from Apr 2012 to Sep 2025. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

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22 vulnerabilities recorded U22
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19 with no fix published

No patched version yet — these are the ones to plan around.

See the unfixed vulnerabilities →
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0 in the last 12 months

Nothing new recorded in the last year.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all jruby vulnerabilities

Vulert verdict on jruby i

Updated on 23 Oct 2026

Careful: 19 of the 22 vulnerabilities Vulert records for this package have no fix yet. Plan around those, or apply the workaround listed for each. The rest have a fixed version to move to.

Long-term outlook: usable, but needs attention 22 vulnerabilities on record across 13 years, none in the last year.

What to do: Plan around the 19 vulnerabilities with no published fix: each lists the affected range and any workaround that reduces exposure. No fix yet: Vulert alerts you the moment one is published. Monitor it with Vulert →

  • Vulnerabilities on record 22 over 13 years · 0 in the last year i
  • Latest disclosure 17 Sep 2025 i
  • Highest CVSS 8.8 i
  • With no published fix 19 i

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01 Versions

Which versions are affected

Every version Vulert holds for jruby, newest first, with the vulnerabilities that name it. A version with a count of zero has no recorded vulnerabilities; open a version to see the vulnerabilities it is exposed to.

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Version Vulert vulnerabilities Fix published Details
1.5.6-9+deb8u2build0.14.04.1~esm2 U19 No Details →
1.5.6-7 U22 No Details →
1.5.6-6 U22 No Details →
1.5.6-5ubuntu1 U22 No Details →

Newest 4 of 4 versions on record. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2012 2
  • 2019 3
  • 2022 1
  • 2023 2
  • 2024 7
  • 2025 7

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 0 of the 22 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for jruby

The 5 most severe of 22 vulnerabilities recorded for this package

Search all 22 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
Critical HTTP Response Splitting Vulnerability in JRuby and Ruby Packages 8.8 high No fix published 18 Nov 2022
Critical Code Injection Vulnerability in JRuby and Ruby Packages 8.1 high 1.5.6-9+deb8u2build0.14.04.1~esm2 20 Nov 2019
Denial of Service Vulnerability in JRuby and Ruby Packages Due to Memory Exhaustion 7.5 high No fix published 28 Apr 2025
Denial of Service Vulnerability in JRuby and Ruby Packages 7.5 high No fix published 12 Jul 2025
Critical ReDoS Vulnerability in REXML Affecting Ruby Packages 7.5 high No fix published 28 Oct 2024

Vulnerability wrong, a fix missing, or a package we should cover? Report it and we will fix the record. Report Vulnerability Provide Feedback

Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315

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Questions

About jruby

Is jruby safe to use?

Vulert records 22 vulnerabilities for jruby in Ubuntu: 0 critical, 0 high, 0 medium and 0 low, plus 22 not yet rated. 19 of them have no published fix yet, so those are the ones to avoid or mitigate.

How many vulnerabilities does jruby have?

22 vulnerabilities are recorded for jruby in the Ubuntu ecosystem: 0 critical, 0 high, 0 medium and 0 low, plus 22 not yet rated. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new jruby vulnerabilities disclosed?

0 vulnerabilities were recorded for jruby in the last 12 months, and the oldest entry in this database dates to 20 Apr 2012. Recency matters more than a lifetime total: it shows how actively new issues are being disclosed for the package you are considering.

Which versions of jruby are affected?

Each vulnerability on this page lists the affected version range and the fixed version to move to. Open the vulnerability for the version you actually run — fixes are specific to a release line, not to the package as a whole.

How do I monitor jruby for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the jruby version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.