boxscore/security
CVE · referencelatest edition

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

CVE-2026-16267HIGH
Unknown Newsletters — Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   N   N  U  H  H  H    8.1   .0027   19.0     —
AFFECTED
  Product      Versions     Fixed
  Newsletters  unspecified  —
TIMELINE
  Jul 20  Reserved by WPScan
  Aug 8   Published (CNA: WPScan)
  Aug 10  EXPLOIT PUBLISHED — CVE-2026-16267 (Unknown Newsletters). Public exploit reference added.
CWE-502 · CNA: WPScan · CVSS v3.1 · 1 reference · NVD status: Received

Description

The Newsletters WordPress plugin before 4.16 does not restrict the classes allowed when unserialising a value taken from a public form submission, allowing unauthenticated attackers to inject arbitrary PHP objects.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
July 20, 2026ReservedReserved by WPScan
August 8, 2026PublishedPublished (CNA: WPScan)
August 10, 2026EXPLOIT PUBLISHEDEXPLOIT PUBLISHED — CVE-2026-16267 (Unknown Newsletters). Public exploit reference added.

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
UnknownNewsletters———

Weaknesses

CWE-502

References (1)

Related

Authoritative record: CVE-2026-16267 at cve.org

Weaknesses: CWE-502

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-16267 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 Wednesday, August 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.