by Kastro
Paper/Archive/CVE-2026-57926

CVE-2026-57926

JetBrains YouTrack — In JetBrains YouTrack before 2026.2.16593 the websandbox bridge was vulnerable to a prototype pollution attack

EPSS 0.3%CVSS 9.8
critical.is priorityof 100
35
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 27.1.271 × 205.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

In JetBrains YouTrack before 2026.2.16593 the websandbox bridge was vulnerable to a prototype pollution attack

Affected

ProductAffectedFixed inSource
YouTrack< 2026.2.165932026.2.16593CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
JetBrains (CNA)2.6CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refjetbrains.com/privacy-security/issues-fixed