Vulnerability Database

314,433

Total vulnerabilities in the database

CVE-2020-1893

Insufficient boundary checks when decoding JSON in TryParse reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.

  • Published: Mar 3, 2020
  • Updated: Nov 9, 2025
  • CVE: CVE-2020-1893
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
facebook / hhvm 4.44.0 4.44.0.x
facebook / hhvm 4.43.0 4.43.0.x
facebook / hhvm 4.42.0 4.42.0.x
facebook / hhvm 4.41.0 4.41.0.x
facebook / hhvm 4.40.0 4.40.0.x
facebook / hhvm 4.39.0 4.39.0.x
facebook / hhvm 4.45.0 4.45.0.x
facebook / hhvm - 4.8.7
facebook / hhvm 4.9.0 4.32.0.x
facebook / hhvm 4.33.0 4.38.0.x