Answer in brief
CVE-2020-27534 records a Medium severity (CVSS 5.3) vulnerability in Path Traversal in Moby builder. The current sources do not mark it as known exploited. The current feed maps github.com/docker/docker (go), github.com/moby/moby (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps github.com/docker/docker (go), github.com/moby/moby (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| github.com/docker/dockergo | >=0 <19.03.9 | 19.03.9 |
| github.com/moby/mobygo | >=0 <19.03.9 | 19.03.9 |
Published upstream
Jan 31, 2024
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
util/binfmt_misc/check.go in Builder in Docker Engine before 19.03.9 calls os.OpenFile with a potentially unsafe qemu-check temporary pathname, constructed with an empty first argument in an ioutil.TempDir call.
Quoted source text, attributed separately from HOL analysis.