CVE-2022-1276

CRITICALNVD 9.89.8—

9.8

Out-of-bounds Read in mrb_get_args in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 74.5%
KEV: Not listed

Published

April 10, 2022

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 26, 2026

Upstream fix merged — awaiting tagged release. Sources: github_commit.

generic

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github_commit

commit c8c083cb7506 (mruby/mruby)

Fix landed in mruby/mruby commit c8c083cb7506 — awaiting tagged release

https://github.com/mruby/mruby/commit/c8c083cb750606b2da81582cd8e43b442bb143e6

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 15:23 UTCepss_batch
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2026-06-06 13:46 UTCepss_batch
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Frequently asked(5)

What is CVE-2022-1276?

CVE-2022-1276 is a critical vulnerability published on April 10, 2022. Out-of-bounds Read in mrbgetargs in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.

When was CVE-2022-1276 disclosed?

CVE-2022-1276 was first published in the National Vulnerability Database on April 10, 2022, 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-2022-1276 actively exploited?

CVE-2022-1276 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 74.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-1276?

CVE-2022-1276 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2022-1276?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-1276, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2022-1276

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CVE-2022-1276

📅 Published

🔄 Last Modified

📋 Advisory Details (2)