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CVE-2026-100277

In JetBrains YouTrack before 2026.2.19197 account takeover was possible by replaying a notification signature

9.8 CRITICALEPSS 0.28%Not in KEVNVD: Analyzed

Last updated: 2026-10-02 16:01 UTC

OverviewCVSS details

9.8CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Sep 30, 2026
Assigner: JetBrains

Affected

YouTrack (JetBrains)

Versions: before 2026.2.19197
Fixed in: 2026.2.19197

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable no · Impact total

EPSS · FIRST, scored Nov 7

0.28%chance of exploitation in 30 days

Higher than 21.55% of CVEs

CVSS 3.1 · NVD

9.8Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 3.1 · JetBrains (CNA)

8.9High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: Low

NVD status: Analyzed

Overview Affected Products References

Overview

Severity

Score	Severity	Version	Vector String
9.8	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.9	HIGH	3.1JetBrains (CNA)	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L

Details

CVE ID: CVE-2026-100277
Status: Analyzed
Assigner (CNA): JetBrains
Published: Sep 30, 2026
Last modified: 2026-10-02 16:01 UTC
Weaknesses: CWE-863

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 08:36 UTC.