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Vulnerabilities

Vulnerability · CVE-2019-20388

xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.

Published Jan 21, 2020 · catalog updated Oct 14, 2026 · xmlSchemaPreRun in xmlschemas.c in

Check if you run it

No confirmed exploitation is on record for CVE-2019-20388. EPSS is 3.18%. Act only if a listed version of xmlSchemaPreRun in xmlschemas.c in is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (xmlSchemaPreRun in xmlschemas.c in).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.18%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe netapp/cloud backup · cpe netapp/clustered data ontap · cpe netapp/h300e firmware · cpe netapp/h300s firmware · cpe netapp/h500s firmware

xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe debian/debian linux9.0
  • cpe netapp/cloud backupversion unspecified
  • cpe netapp/clustered data ontapversion unspecified
  • cpe netapp/h300e firmwareversion unspecified
  • cpe netapp/h300s firmwareversion unspecified
  • cpe netapp/h500s firmwareversion unspecified
  • cpe netapp/h700s firmwareversion unspecified
  • cpe netapp/ontap select deploy administration utilityversion unspecified
  • cpe netapp/plug-in for symantec netbackupversion unspecified
  • cpe netapp/smi-s providerversion unspecified
  • cpe netapp/snapdriveversion unspecified
  • cpe xmlsoft/libxml22.9.10

How to fix CVE-2019-20388

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2019-20388. EPSS is 3.18%. Act only if a listed version of xmlSchemaPreRun in xmlschemas.c in is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 9.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-401: Missing Release of Memory after Effective Lifetime. EPSS 3.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 21, 2020 · NIST NVD

    Detected

    xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.

  2. Oct 14, 2026 · NIST NVD

    Updated

    xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.

Sources

  • CVE.orgVulnerability recordCVE-2019-20388

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-20388

    30-day exploitation probability 3.2%

    first.org
  • NIST NVDVulnerability recordCVE-2019-20388

    xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.