Vulnerability · Published Jul 21, 2026 · Assigned by Docker
CVE-2026-15793Git source checkout from a bundle file could lead to command injection
Medium 6.5
In plain English
A medium-severity argument injection in BuildKit from moby. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 4.0)6.5Medium
Exploit odds (30 days)0.2%top 89.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
BuildKit custom frontends or clients using the raw low-level API can set git.checkoutbundle=true when checking out Git sources. If the Git source is malicious, this could lead to a crafted command invocation on the host.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:26.04:LTS | docker.io | no fix listed | UBUNTU-CVE-2026-15793 |
| Ubuntu:26.10 | docker.io | no fix listed | UBUNTU-CVE-2026-15793 |
| Ubuntu:26.04:LTS | docker.io-app | no fix listed | UBUNTU-CVE-2026-15793 |
| Ubuntu:26.10 | docker.io-app | no fix listed | UBUNTU-CVE-2026-15793 |
Affected products (as reported)
Weakness: CWE-88 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N