Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-100265

CVE-2026-100265MEDIUM

JetBrains Rider — In JetBrains Rider before 2026.2.1 aI Assistant could auto-update third-party skills without user confirmation

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  L  L  N    6.5   .0010    0.9     —

AFFECTED
  Product  Versions     Fixed
  Rider    unspecified  —

TIMELINE
  Sep 25  Reserved by JetBrains
  Sep 30  Published (CNA: JetBrains)
  Oct 2   RESCORED — CVE-2026-100265 (JetBrains Rider). CVSS 4.8 → 6.5 (NVD).

CWE-494 · CNA: JetBrains · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

In JetBrains Rider before 2026.2.1 aI Assistant could auto-update third-party skills without user confirmation

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 25, 2026	Reserved	Reserved by JetBrains
September 30, 2026	Published	Published (CNA: JetBrains)
October 2, 2026	RESCORED	RESCORED — CVE-2026-100265 (JetBrains Rider). CVSS 4.8 → 6.5 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
JetBrains	Rider	—	—	—

Weaknesses

CWE-494

References (1)

https://www.jetbrains.com/privacy-security/issues-fixed/ [Vendor Advisory]

Authoritative record: CVE-2026-100265 at cve.org

Vendors: jetbrains

Weaknesses: CWE-494

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-100265 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 Saturday, October 3, 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.