CVE-2021-41862

CRITICALNVD 9.89.8—

9.8

AviatorScript through 5.2.7 allows code execution via an expression that is encoded with Byte Code Engineering Library (BCEL).

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 78.5%
KEV: Not listed

Published

October 2, 2021

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://github.com/killme2008/aviatorscript/issues/421
af854a3a-2127-422b-91ae-364da2661108https://github.com/killme2008/aviatorscript/issues/421

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
maven	com.googlecode.aviator:aviator	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
com.googlecode.aviator:aviator	5.2.1 ... 5.2.7 (7 versions)	—	—

Weakness Classification(1)

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

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Data Freshness Timeline

(refreshed 9× in last 7d / 9× 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.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 09:37 UTCEG score recompute
2026-05-26 09:37 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-41862?

CVE-2021-41862 is a critical vulnerability published on October 2, 2021. AviatorScript through 5.2.7 allows code execution via an expression that is encoded with Byte Code Engineering Library (BCEL).

When was CVE-2021-41862 disclosed?

CVE-2021-41862 was first published in the National Vulnerability Database on October 2, 2021, 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-2021-41862 actively exploited?

CVE-2021-41862 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 78.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-41862?

CVE-2021-41862 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-41862?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41862, 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-2021-41862

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