CVE-2021-41269

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 4.3% (90th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4.3%CVSS: 10.0Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

cron-utils is a Java library to define, parse, validate, migrate crons as well as get human readable descriptions for them. In affected versions A template Injection was identified in cron-utils enabling attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Versions up to 9.1.2 are susceptible to this vulnerability. Please note, that only projects using the @Cron annotation to validate untrusted Cron expressions are affected. The issue was patched and a new version was released. Please upgrade to version 9.1.6. There are no known workarounds known.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
51
EG Risk 51/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation4% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track* or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
4.3%
EPSS %ILE
90th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact total (CVSS ≥ 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

November 15, 2021

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Oct 3, 2026
Patch available. Sources: github_commit, github.
githubMentions a patch (unverified)

Critical vulnerability found in cron-utils · Advisory · jmrozanec/cron-utils · GitHub

https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-p9m8-27x8-rg87
generic

Fix security vulnerability regarding the Hibernate dependency. · Issue #461 · jmrozanec/cron-utils · GitHub

https://github.com/jmrozanec/cron-utils/issues/461
github_commit Patch Available

commit d6707503ec2f (jmrozanec/cron-utils)

Patch available: jmrozanec/cron-utils 9.1.6 (contains commit d6707503ec2f)

https://github.com/jmrozanec/cron-utils/commit/d6707503ec2f20947f79e38f861dba93b39df9da
github_commit Patch Available

commit cfd2880f80e6 (jmrozanec/cron-utils)

Patch available: jmrozanec/cron-utils 9.1.6 (contains commit cfd2880f80e6)

https://github.com/jmrozanec/cron-utils/commit/cfd2880f80e62ea74b92fa83474c2aabdb9899da

Vendor Advisories for CVE-2021-41269(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatcron-utils2022-10-06redhat
redhatpatch2022-03-22redhat

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)
PackageVulnerable rangeFix by version rangeDependents
com.cronutils:cron-utils1.0.0 ... 9.1.5 (50 versions)
  • every version up to 9.1.6: fixed in 9.1.6
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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.

Showing the most recent 100 of 183 total refreshes for this CVE.

  1. 2026-10-09 20:04 UTCEPSS rescore
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Related CVEs(same product + same vendor + same CWE)

Same product

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Maven:com.cronutils:cron-utils

Frequently asked(5)

What is CVE-2021-41269?
CVE-2021-41269 is a critical vulnerability published on November 15, 2021. cron-utils is a Java library to define, parse, validate, migrate crons as well as get human readable descriptions for them. In affected versions A template Injection was identified in cron-utils enabling attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code…
When was CVE-2021-41269 disclosed?
CVE-2021-41269 was first published on November 15, 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-2021-41269 actively exploited?
CVE-2021-41269 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.3% probability of exploitation in the next 30 days (90th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2021-41269?
CVE-2021-41269 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2021-41269?
A fix for CVE-2021-41269 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2021-41269 are linked in the Vendor Advisories panel on this page.

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