CVSS 4.0
7.1 highCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCVE-2026-121614
High (7.1). EPSS 0.1% estimated probability of exploitation activity in the next 30 days.
Docker Sandboxes versions 0.31.0 before 0.50.0 do not neutralize repository-controlled Git configuration when running certain host-side Git commands. An attacker who can modify a host repository's Git configuration, for example through a direct-mode sandbox with the repository mounted read-write, can configure core.fsmonitor or another Git setting that invokes an external program. Git can execute the program during a later clone-mode fetch or, starting in version 0.39.0, an sbx kit push initiated by the user. The program runs on the host with the invoking user's permissions, outside the sandbox's microVM isolation. The read-only host repository mount provided to a clone-mode sandbox does not itself allow that sandbox to modify the host repository's Git configuration. The issue is fixed in version 0.50.0.
Severity
- EPSS
- 0.1% estimated probability of exploitation activity in the next 30 days; 2nd percentile. Scored 2026-11-04. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-15 External Control of System or Configuration Setting
- OWASP Top 10
- A02:2025 Security Misconfiguration
- Published
- Record from
- the NVD, synced
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Explain CVE-2026-121614 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-121614?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-121614?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-2026-121614 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 |
|---|---|
| Docker Sandboxes | from 0.31.0 before 0.50.0 |
Attack patterns (CAPEC)
- CAPEC-13 Subverting Environment Variable Values Likelihood: High · Severity: Very High
- CAPEC-69 Target Programs with Elevated Privileges Likelihood: High · Severity: Very High
- CAPEC-76 Manipulating Web Input to File System Calls Likelihood: High · Severity: Very High
- CAPEC-77 Manipulating User-Controlled Variables Likelihood: High · Severity: Very High
- CAPEC-146 XML Schema Poisoning Likelihood: Low · Severity: High
- CAPEC-176 Configuration/Environment Manipulation Severity: Medium
- CAPEC-203 Manipulate Registry Information Severity: Medium
- CAPEC-270 Modification of Registry Run Keys Likelihood: Medium · Severity: Medium
- CAPEC-271 Schema Poisoning Likelihood: Low · Severity: High
- CAPEC-579 Replace Winlogon Helper DLL
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.