CVE-2020-26238

HIGHNVD 7.97.9—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.9 under NVD CVSS v3. EPSS exploit probability: 4.2% (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
7.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4.2%CVSS: 7.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3.

CVSS v3
7.9
EG Score
7.9HIGHmedium confidence
EG Risk
42
EG Risk 42/100CISA 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
Severity79% × 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
4.2%
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 partial (CVSS below 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 25, 2020

Last Modified

November 21, 2024

Advisory Details (10)

Auto-updated Sep 21, 2026
Patch available. Sources: github_commit, github.
generic
https://lists.apache.org/thread.html/r855aead591697dc2e85faf66c99036e49f492431940b78d4e6d895b5%40%3Cgitbox.hive.apache.org%3E
generic
https://lists.apache.org/thread.html/r737406bc17d49ffe8fe6a8828d390ee0a02e45e5a5b4f931180b9a93%40%3Cissues.hive.apache.org%3E
generic
https://lists.apache.org/thread.html/r71083c759dc627f198571b3d48b6745fe798b1d53c34f7ef8de9e7dd%40%3Cissues.hive.apache.org%3E
generic
https://lists.apache.org/thread.html/r5f601d15292e3302ad0ae0e89527029546945b1cd5837af7e838d354%40%3Cdev.hive.apache.org%3E
generic
https://lists.apache.org/thread.html/r50e1b5544c37e408ed7e9a958b28237b1cb9660ba2b3dba46f343e23%40%3Cissues.hive.apache.org%3E
generic
https://lists.apache.org/thread.html/r432a69a1a85cbcb1f1bad2aa0fbfce0367bf894bf917f6ed7118e7f0%40%3Cissues.hive.apache.org%3E
generic
https://lists.apache.org/thread.html/r390bb7630b7ea8f02bf7adbbe69c0ae8b562c527d663c543d965f959%40%3Cgitbox.hive.apache.org%3E
githubMentions a patch (unverified)

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

https://github.com/jmrozanec/cron-utils/security/advisories/GHSA-pfj3-56hm-jwq5
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 4cf373f7352f (jmrozanec/cron-utils)

Patch available: jmrozanec/cron-utils 9.1.3 (contains commit 4cf373f7352f)

https://github.com/jmrozanec/cron-utils/commit/4cf373f7352f5d95f0bf6512af8af326b31c835e

Vendor Advisories for CVE-2020-26238(2)

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

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatpatch2021-08-18redhat
redhatpatch2021-08-18redhat
redhatcron-utils2021-03-29redhat

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 ... 9.1.2 (48 versions)
  • every version up to 9.1.3: fixed in 9.1.3
—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 26× 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 154 total refreshes for this CVE.

  1. 2026-10-09 20:04 UTCEPSS rescore
  2. 2026-10-09 14:28 UTCOSV refresh
  3. 2026-10-08 16:38 UTCEPSS rescore
  4. 2026-10-07 23:44 UTCEPSS rescore
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  8. 2026-09-30 15:16 UTCEG score recompute
  9. 2026-09-30 14:59 UTCEPSS rescore
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  18. 2026-09-19 21:52 UTCOSV refresh
  19. 2026-09-19 15:37 UTCEPSS rescore
  20. 2026-09-18 19:23 UTCEPSS rescore
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  22. 2026-09-16 14:04 UTCEPSS rescore
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  24. 2026-09-13 16:43 UTCEPSS rescore
  25. 2026-09-12 14:57 UTCEPSS rescore
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  1. 2026-09-11 09:32 UTCEPSS rescore
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  3. 2026-09-07 15:57 UTCEPSS rescore
  4. 2026-09-06 13:44 UTCEPSS rescore
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  6. 2026-09-04 13:57 UTCEPSS rescore
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  8. 2026-09-02 14:08 UTCEPSS rescore
  9. 2026-09-01 03:32 UTCEPSS rescore
  10. 2026-09-01 01:34 UTCOSV refresh
  11. 2026-08-30 19:14 UTCEPSS rescore
  12. 2026-08-30 01:18 UTCEPSS rescore
  13. 2026-08-27 14:21 UTCEPSS rescore
  14. 2026-08-26 14:42 UTCEPSS rescore
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  19. 2026-08-18 13:44 UTCEPSS rescore
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  21. 2026-08-16 14:52 UTCEPSS rescore
  22. 2026-08-16 02:11 UTCEPSS rescore
  23. 2026-08-15 01:26 UTCEPSS rescore
  24. 2026-08-15 01:22 UTCOSV refresh
  25. 2026-08-13 21:57 UTCEPSS rescore
  26. 2026-08-12 13:47 UTCEPSS rescore
  27. 2026-08-09 13:43 UTCEPSS rescore
  28. 2026-08-08 16:33 UTCEPSS rescore
  29. 2026-08-07 16:23 UTCEPSS rescore
  30. 2026-08-06 13:43 UTCEPSS rescore
  31. 2026-08-04 15:06 UTCEPSS rescore
  32. 2026-08-04 10:34 UTCEPSS rescore
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  35. 2026-07-30 16:25 UTCEPSS rescore
  36. 2026-07-30 13:44 UTCOSV refresh
  37. 2026-07-30 01:27 UTCEPSS rescore
  38. 2026-07-28 15:33 UTCEPSS rescore
  39. 2026-07-26 14:51 UTCEPSS rescore
  40. 2026-07-25 14:15 UTCEPSS rescore
  41. 2026-07-24 14:14 UTCEPSS rescore
  42. 2026-07-23 14:15 UTCEPSS rescore
  43. 2026-07-23 14:15 UTCEPSS rescore
  44. 2026-07-23 01:51 UTCEG score recompute
  45. 2026-07-22 22:37 UTCEG score recompute
  46. 2026-07-22 14:05 UTCEPSS rescore
  47. 2026-07-21 15:22 UTCEPSS rescore
  48. 2026-07-21 15:22 UTCEPSS rescore
  49. 2026-07-20 17:04 UTCEPSS rescore
  50. 2026-07-20 17:04 UTCEPSS rescore
  51. 2026-07-19 14:28 UTCEPSS rescore
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  53. 2026-07-19 02:26 UTCEPSS rescore
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  55. 2026-07-16 16:59 UTCEPSS rescore
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  58. 2026-07-15 01:57 UTCEPSS rescore
  59. 2026-07-13 22:27 UTCEPSS rescore
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  61. 2026-07-12 22:38 UTCOSV refresh
  62. 2026-07-12 05:44 UTCEPSS rescore
  63. 2026-07-11 08:25 UTCEPSS rescore
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  65. 2026-07-09 19:07 UTCEPSS rescore
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  67. 2026-07-07 13:43 UTCEPSS rescore
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  74. 2026-06-30 23:20 UTCEPSS rescore
  75. 2026-06-30 23:20 UTCEPSS rescore

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Maven:com.cronutils:cron-utils

Frequently asked(5)

What is CVE-2020-26238?
CVE-2020-26238 is a high vulnerability published on November 25, 2020. Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote…
When was CVE-2020-26238 disclosed?
CVE-2020-26238 was first published on November 25, 2020, 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-2020-26238 actively exploited?
CVE-2020-26238 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.2% probability of exploitation in the next 30 days (90th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2020-26238?
CVE-2020-26238 has a CVSS v3 base score of 7.9 (NVD).
How do I remediate CVE-2020-26238?
A fix for CVE-2020-26238 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2020-26238 are linked in the Vendor Advisories panel on this page.

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