Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-47996

CVE-2021-47996HIGH

sparklemotion nokogiri — Nokogiri before 1.11.4 Multiple Vulnerabilities via libxml2

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   N   N   H    8.7   .0050   41.2     —

AFFECTED
  Product   Versions     Fixed
  nokogiri  unspecified  1.11.4

TIMELINE
  Aug 25  Reserved by VulnCheck
  Aug 25  Published (CNA: VulnCheck)
  Sep 8   REJECTED — CVE-2021-47996 (sparklemotion nokogiri). Record withdrawn by the CNA.

CWE-119 · CNA: VulnCheck · CVSS v4.0 · 18 references · NVD status: Rejected

Description

This CVE ID has been rejected as a duplicate.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 25, 2026	Reserved	Reserved by VulnCheck
August 25, 2026	Published	Published (CNA: VulnCheck)
September 8, 2026	REJECTED	REJECTED — CVE-2021-47996 (sparklemotion nokogiri). Record withdrawn by the CNA.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
sparklemotion	nokogiri	—	—	1.11.4

Weaknesses

CWE-119

References (18)

Authoritative record: CVE-2021-47996 at cve.org

Vendors: sparklemotion

Weaknesses: CWE-119

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-47996 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 Sunday, October 4, 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.