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.
CVE-2026-61712
This low-severity CVE scores 2.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 2.3
- EG Score
- 2.3(low)
- EG Risk
- 15(Track)EG Risk 15/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity23% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 34%
- KEV
- Not listed
Published
August 19, 2026
Last Modified
August 19, 2026
References (4)
- security-advisories@githubhttps://github.com/moby/buildkit/commit/408266e4ba254cecabedaacdad6905de4d2a75a1
- security-advisories@githubhttps://github.com/moby/buildkit/commit/69a3924648e485acb3faad3081e03a8554431255
- security-advisories@githubhttps://github.com/moby/buildkit/releases/tag/v0.31.1
- security-advisories@githubhttps://github.com/moby/buildkit/security/advisories/GHSA-72x6-4j93-7w86
Vendor Advisories for CVE-2026-61712(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 4× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-19 20:19 UTCEG score recompute
- 2026-08-19 20:13 UTCEG score recompute
- 2026-08-19 20:12 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-61712?
When was CVE-2026-61712 disclosed?
Is CVE-2026-61712 actively exploited?
What is the CVSS score of CVE-2026-61712?
How do I remediate CVE-2026-61712?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-61712
Is Your Infrastructure Affected by CVE-2026-61712?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.