CVE-2026-57926

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

CVSS v3 2.6 LOW

2.6^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.jetbrains.com/privacy-security/issues-fixed/	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:jetbrains:youtrack:*:*:*:*:*:*:*:*

History

27 Jun 2026, 18:51

Type	Values Removed	Values Added
CPE		cpe:2.3:a:jetbrains:youtrack::::::::
First Time		Jetbrains Jetbrains youtrack
References	~~() https://www.jetbrains.com/privacy-security/issues-fixed/ -~~	() https://www.jetbrains.com/privacy-security/issues-fixed/ - Vendor Advisory

26 Jun 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-26 14:17

Updated : 2026-06-27 18:51

NVD link : CVE-2026-57926

Mitre link : CVE-2026-57926

CVE.ORG link : CVE-2026-57926

JSON object : View

Products Affected

jetbrains

youtrack

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

{"id": "CVE-2026-57926", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-57926", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-26T13:26:32.244498Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@jetbrains.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 2.6, "attackVector": "NETWORK", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 1.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "cve@jetbrains.com", "affectedData": [{"vendor": "JetBrains", "product": "YouTrack", "versions": [{"status": "affected", "version": "0", "lessThan": "2026.2.16593", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-06-26T14:17:07.780", "references": [{"url": "https://www.jetbrains.com/privacy-security/issues-fixed/", "tags": ["Vendor Advisory"], "source": "cve@jetbrains.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "cve@jetbrains.com", "description": [{"lang": "en", "value": "CWE-1321"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-1321"}]}], "descriptions": [{"lang": "en", "value": "In JetBrains YouTrack before 2026.2.16593 the websandbox bridge was vulnerable to a prototype pollution attack"}], "lastModified": "2026-06-27T18:51:07.113", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:jetbrains:youtrack:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C45D6D89-194E-4494-A0B2-131DC8C6AF51", "versionEndExcluding": "2026.2.16593"}], "operator": "OR"}]}], "sourceIdentifier": "cve@jetbrains.com"}