CVE-2026-57926

EUVD-2026-39658
In JetBrains YouTrack before 2026.2.16593 the websandbox bridge was vulnerable to a prototype pollution attack
Prototype Pollution
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
2.6 LOW
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 7.5%
Affected Products (NVD)
VendorProductVersion
jetbrainsyoutrack
𝑥
< 2026.2.16593
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.jetbrains.com/privacy-security/issues-fixed/