5.3

CVE-2026-61711: moby buildkit Improper Input Validation

CVSS: 5.3v4.0MediumDeferred
AliasesCGA-2gwx-vmjf-frhrCGA-2q9r-48jm-c3jjCGA-3f3j-vmvh-hq5q
Published 19-08-2026Last modified 20-08-2026
Open JSON

Vulnerability summary

CVE-2026-61711 is a medium (CVSS 5.3) Improper Input Validation vulnerability in moby buildkit. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 27.9% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.36%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 3
OPENSUSE-SU-2026:21761-1SUSE-SU-2026:23625-1CGA-7W6W-PQPR-3RHW

Timeline

  1. 19-08-2026
    PublishedVulnerability first disclosed.
  2. 20-08-2026
    Last modifiedVulnerability information updated.

Description

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, a custom frontend could place an invalid SecurityMode value in a crafted build request, and executor/oci/spec_linux.go treated the unsupported value as a non-sandbox mode without requiring the security.insecure entitlement. This disabled Seccomp and AppArmor protections for the build container even though Linux capabilities remained restricted. This issue is fixed in version 0.31.1.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

0.00 pp

From 0.36% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.36%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard39 products
  • cloudbeat-8.17All versions (No fix recorded)
  • cloudbeat-9.2< 9.2.8-r19
  • cloudbeat-9.3< 9.3.8-r5
  • cloudbeat-9.4< 9.4.5-r3
  • cloudbeat-9.5< 9.5.1-r3
Wolfi13 products
  • conftest< 0.69.0-r3
  • dockerd-28All versions (No fix recorded)
  • guac< 1.1.0-r28
  • guacingest< 1.1.0-r28
  • guacone< 1.1.0-r28
Github.com/moby1 product
  • buildkit< 0.31.1
Moby1 product

4 vendors · 54 products

References

7 links