Answer in brief
CVE-2026-61712 records a Low severity (CVSS 2.3) vulnerability in BuildKit: Possible runtime DoS via unbounded group parsing. The current sources do not mark it as known exploited. The current feed maps moby/buildkit (generic), github.com/moby/buildkit (go), github.com/moby/buildkit (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 2.3. 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 moby/buildkit (generic), github.com/moby/buildkit (go), github.com/moby/buildkit (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| moby/buildkitgeneric | < 0.31.1 | Not reported |
| github.com/moby/buildkitgo | >=0 <0.31.1 | 0.31.1 |
| github.com/moby/buildkitgo | <=0.31.0 | 0.31.1 |
Published upstream
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 19, 2026
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, BuildKit read attacker-controlled /etc/passwd and /etc/group files without an upper bound while resolving a username to a user identifier or group identifier in executor/oci/user.go and solver/llbsolver/ops/user_linux.go. A malicious base image or build could provide oversized files that exhausted memory during user resolution and caused out-of-memory termination of the buildkitd process. This issue is fixed in version 0.31.1.
Quoted source text, attributed separately from HOL analysis.