CVE-2020-14338

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 1.3%, top 33% of all CVEs by exploit prediction. 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
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.3Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in Wildfly's implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of Wildfly enforced the "use-grammar-pool-only" feature. This flaw allows a specially-crafted XML file to manipulate the validation process in certain cases. This issue is the same flaw as CVE-2020-14621, which affected OpenJDK, and uses a similar code. This flaw affects all Xerces JBoss versions before 2.12.0.SP3.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

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
Severity53% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
67.3%
KEV
Not listed

Published

September 17, 2020

Last Modified

November 21, 2024

References (4)

Vendor Advisories for CVE-2020-14338(1)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatxercesimpl2021-08-11redhat
redhatpatch2020-12-16redhat
redhateap7-xerces-j2-0:2.12.0-2.SP03_redhat_00001.1.el7eap2020-10-13redhat
redhateap7-xerces-j2-0:2.12.0-2.SP03_redhat_00001.1.el6eap2020-10-13redhat
redhateap7-xerces-j2-0:2.12.0-2.SP03_redhat_00001.1.el8eap2020-10-13redhat

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 rangeFixed inDependents
xerces:xercesImpl2.0.0 ... 2.9.1 (17 versions)2.12.0.sp3—

Weakness Classification(1)

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

Additional Vendor Advisories

(8)

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 13× in last 7d / 45× 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.

  1. 2026-07-23 01:49 UTCEG score recompute
  2. 2026-07-22 22:34 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
  4. 2026-07-21 15:22 UTCEPSS rescore
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  18. 2026-07-13 02:38 UTCOSV refresh
  19. 2026-07-12 05:44 UTCEPSS rescore
  20. 2026-07-11 08:24 UTCEPSS rescore
  21. 2026-07-09 19:06 UTCEPSS rescore
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  1. 2026-07-06 02:20 UTCEPSS rescore
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  6. 2026-06-30 23:20 UTCEPSS rescore
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  8. 2026-06-29 14:04 UTCEPSS rescore
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  18. 2026-06-24 12:18 UTCOSV refresh
  19. 2026-06-23 21:31 UTCEPSS rescore
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  21. 2026-06-22 14:23 UTCEPSS rescore
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  23. 2026-06-21 14:54 UTCEPSS rescore
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  27. 2026-06-19 19:23 UTCEPSS rescore
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  29. 2026-06-18 17:50 UTCEPSS rescore
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  35. 2026-06-15 17:46 UTCEPSS rescore
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  40. 2026-06-12 23:09 UTCEPSS rescore
  41. 2026-06-11 13:58 UTCEPSS rescore
  42. 2026-06-10 22:16 UTCEPSS rescore
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  44. 2026-06-10 13:20 UTCEPSS rescore
  45. 2026-06-08 14:15 UTCEPSS rescore
  46. 2026-06-08 14:15 UTCEPSS rescore
  47. 2026-06-07 16:46 UTCOSV refresh
  48. 2026-06-07 15:23 UTCEPSS rescore
  49. 2026-06-07 15:23 UTCEPSS rescore
  50. 2026-06-06 13:45 UTCEPSS rescore
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  65. 2026-05-29 13:42 UTCEPSS rescore
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  67. 2026-05-28 13:43 UTCEPSS rescore
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  69. 2026-05-27 13:39 UTCEPSS rescore
  70. 2026-05-26 13:42 UTCEPSS rescore
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  72. 2026-05-26 07:17 UTCEPSS rescore
  73. 2026-05-26 07:17 UTCEPSS rescore
  74. 2026-05-23 07:42 UTCEG score recompute
  75. 2026-05-23 07:42 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2020-14338?
CVE-2020-14338 is a medium vulnerability published on September 17, 2020. A flaw was found in Wildfly's implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of Wildfly enforced the "use-grammar-pool-only" feature. This flaw allows a specially-crafted XML file to manipulate the validation process in certain cases. This issue…
When was CVE-2020-14338 disclosed?
CVE-2020-14338 was first published in the National Vulnerability Database on September 17, 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-2020-14338 actively exploited?
CVE-2020-14338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-14338?
CVE-2020-14338 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2020-14338?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-14338, 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

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