CVE-2011-5331

CRITICALNVD 9.89.8—

9.8

Distributed Ruby (aka DRuby) 1.8 mishandles instance_eval.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 89.9%
KEV: Not listed

Published

November 18, 2019

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://www.exploit-db.com/exploits/17058
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/17058

Data Freshness Timeline

(refreshed 9× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-07 15:22 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore

Frequently asked(5)

What is CVE-2011-5331?

CVE-2011-5331 is a critical vulnerability published on November 18, 2019. Distributed Ruby (aka DRuby) 1.8 mishandles instance_eval.

When was CVE-2011-5331 disclosed?

CVE-2011-5331 was first published in the National Vulnerability Database on November 18, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2011-5331 actively exploited?

CVE-2011-5331 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2011-5331?

CVE-2011-5331 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2011-5331?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-5331, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2011-5331

📅 Published

🔄 Last Modified

🔗 References (2)