boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2019-20444

CVE-2019-20444CRITICAL
n/a n/a — HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header w…
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  N    9.1   .0891   95.2     —
AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —
TIMELINE
  Jan 29  Reserved by mitre
  Jan 29  Published (CNA: mitre)
  Oct 8   ENRICHED — CVE-2019-20444. Received CVSS 9.1 and CPE data from NVD.
  Oct 8   EXPLOIT PUBLISHED — CVE-2019-20444. Public exploit reference added.
CWE-444 · CNA: mitre · CVSS v3.1 · 116 references · NVD status: Modified

Description

HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."

Lifecycle

Complete event history — 4 events, chronological
DateEventDetail
January 29, 2020ReservedReserved by mitre
January 29, 2020PublishedPublished (CNA: mitre)
October 8, 2026ENRICHEDENRICHED — CVE-2019-20444. Received CVSS 9.1 and CPE data from NVD.
October 8, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2019-20444. Public exploit reference added.

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
n/an/a—n/a—

Weaknesses

CWE-444

References (116)

Related

Authoritative record: CVE-2019-20444 at cve.org

Weaknesses: CWE-444

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2019-20444 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.