Vulnerability · Published Oct 5, 2026 · Assigned by Docker
CVE-2026-93319A malicious frontend can cause a daemon panic
Medium 5.7
In plain English
A medium-severity security flaw 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 0.1% (higher than 0% of all known vulnerabilities).
Severity (CVSS 4.0)5.7Medium
Exploit odds (30 days)<0.1%top 99.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A malicious external BuildKit frontend can send requests using the internal API that can create conditions for a data race that can cause the BuildKit daemon to panic.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:26.04:LTS | docker.io | no fix listed | UBUNTU-CVE-2026-93319 |
| Ubuntu:26.10 | docker.io | no fix listed | UBUNTU-CVE-2026-93319 |
| Ubuntu:26.04:LTS | docker.io-app | no fix listed | UBUNTU-CVE-2026-93319 |
| Ubuntu:26.10 | docker.io-app | no fix listed | UBUNTU-CVE-2026-93319 |
Affected products (as reported)
Weakness: CWE-567 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N