CVE-2026-33748 | moby buildkit up to 0.28.0 path traversal

VDB-353924 · CVE-2026-33748 · GCVE-0-2026-33748 MOBY BUILDKIT UP TO 0.28.0 PATH TRAVERSAL HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 0.73+ Summaryinfo A vulnerability was found in moby buildkit up to 0.28.0 and classified as critical. Affected is an unknown function. Such manipulation leads to path traversal. This vulnerability is traded as CVE-2026-33748. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component. Detailsinfo A vulnerability was found in moby buildkit up to 0.28.0. It has been rated as critical. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. CVE summarizes: BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, insufficient validation of Git URL fragment subdir components may allow access to files outside the checked-out Git repository root. Possible access is limited to files on the same mounted filesystem. The issue has been fixed in version v0.28.1 The issue affects only builds that use Git URLs with a subpath component. As a workaround, avoid building Dockerfiles from untrusted sources or using the subdir component from an untrusted Git repository where the subdir component could point to a symlink. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-33748 since 03/23/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006. Upgrading to version 0.28.1 eliminates this vulnerability. Productinfo Vendor moby Name buildkit Version 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28.0 Website Product: https://github.com/moby/buildkit/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 5.1 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Path traversal CWE: CWE-22 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: buildkit 0.28.1 Timelineinfo 03/23/2026 CVE reserved 03/27/2026 +4 days Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-33748 (🔒) GCVE (CVE): GCVE-0-2026-33748 GCVE (VulDB): GCVE-100-353924 Entryinfo Created: 03/27/2026 15:47 Changes: 03/27/2026 15:47 (66) Complete: 🔍 Cache ID: 99:730:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸