Reference page — cumulative record through Thursday, October 8, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-103489

CVE-2026-103489MEDIUM

JetBrains YouTrack — In JetBrains YouTrack before 2026.2.19422 hTML injection in VCS command failure notifications was possible

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   R  C  L  L  N    5.4   .0034   25.2     —

AFFECTED
  Product   Versions     Fixed
  YouTrack  unspecified  —

TIMELINE
  Sep 30  Reserved by JetBrains
  Oct 1   Published (CNA: JetBrains)
  Oct 5   RESCORED — CVE-2026-103489 (JetBrains YouTrack). CVSS 2 → 5.4 (NVD).

CWE-79 · CNA: JetBrains · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

In JetBrains YouTrack before 2026.2.19422 hTML injection in VCS command failure notifications was possible

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 30, 2026	Reserved	Reserved by JetBrains
October 1, 2026	Published	Published (CNA: JetBrains)
October 5, 2026	RESCORED	RESCORED — CVE-2026-103489 (JetBrains YouTrack). CVSS 2 → 5.4 (NVD).

Affected

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

Weaknesses

CWE-79

References (1)

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

Authoritative record: CVE-2026-103489 at cve.org

Vendors: jetbrains

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-103489 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 Thursday, October 8, 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.