CVE-2026-44837 — Security Box Score

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-2026-44837HIGH

ViewComponent view_component — view_component: System Test Entry Point Path Check Allows Sibling Directory Escape

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  N  N    7.5   .0041   34.5     —

AFFECTED
  Product         Versions             Fixed
  view_component  >= 3.0.0, < 4.9.0 –  —

TIMELINE
  May 7   Reserved by GitHub_M
  May 26  EXPLOIT PUBLISHED — CVE-2026-44837 (ViewComponent view_component). Public exploit reference added.
  May 26  Published (CNA: GitHub_M)

CWE-187 · CNA: GitHub_M · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. From 3.0.0 to 4.9.0, the system test entrypoint canonicalizes a user-controlled file path with File.realpath, then checks whether the resolved path starts with the temp directory path. This is not a safe containment check because sibling directories can share the same string prefix. This vulnerability is fixed in 4.9.0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
May 7, 2026	Reserved	Reserved by GitHub_M
May 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-44837 (ViewComponent view_component). Public exploit reference added.
May 26, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
ViewComponent	view_component	—	>= 3.0.0, < 4.9.0	—

Weaknesses

CWE-187

References (1)

https://github.com/ViewComponent/view_component/security/advisories/GHSA-hg3h-g7xc-f7vp [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-44837 at cve.org

Vendors: viewcomponent

Weaknesses: CWE-187

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-44837 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.