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-2019-16869

CVE-2019-16869HIGH
n/a n/a — Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which le…
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  H  N    7.5   .0864   95.1     —
AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —
TIMELINE
  Sep 25  Reserved by mitre
  Sep 26  Published (CNA: mitre)
  Oct 8   ENRICHED — CVE-2019-16869. Received CVSS 7.5 and CPE data from NVD.
  Oct 8   EXPLOIT PUBLISHED — CVE-2019-16869. Public exploit reference added.
CWE-444 · CNA: mitre · CVSS v3.1 · 146 references · NVD status: Modified

Description

Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.

Lifecycle

Complete event history — 4 events, chronological
DateEventDetail
September 25, 2019ReservedReserved by mitre
September 26, 2019PublishedPublished (CNA: mitre)
October 8, 2026ENRICHEDENRICHED — CVE-2019-16869. Received CVSS 7.5 and CPE data from NVD.
October 8, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2019-16869. Public exploit reference added.

Affected

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

Weaknesses

CWE-444

References (146)

Related

Authoritative record: CVE-2019-16869 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-2019-16869 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.