CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HCVE-2026-123855
High (7.5).
In JetBrains Toolbox App before 3.6.1 command injection was possible via enterprise configuration URLs
Severity
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-06. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-78 Improper Neutralization of Special Elements used in an OS Command (OS Command Injection)
- OWASP Top 10
- A05:2025 Injection
- Published
- Record from
- the NVD, synced
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Explain CVE-2026-123855 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-123855?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-123855?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-123855 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| JetBrains Toolbox App | before 3.6.1 |
Attack patterns (CAPEC)
- CAPEC-6 Argument Injection Likelihood: High · Severity: High
- CAPEC-15 Command Delimiters Likelihood: High · Severity: High
- CAPEC-43 Exploiting Multiple Input Interpretation Layers Likelihood: Medium · Severity: High
- CAPEC-88 OS Command Injection Likelihood: High · Severity: High
- CAPEC-108 Command Line Execution through SQL Injection Likelihood: Low · Severity: Very High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.