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CVE-2026-47179

Arcane: Authenticated Arbitrary Host File Read via Docker Compose Include Directives in Arcane

7.7 HighFix available

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.4, ProjectService.GetProjectFileContent returns the contents of any Docker Compose include directive declared in a project's compose file before any path-traversal validation runs. Because ProjectService.CreateProject writes attacker-supplied compose content to disk without validating include paths, an authenticated user can create a project whose compose file declares include: ['../../../../etc/passwd'], then read the include via the project file API. The result is arbitrary read of any file readable by the Arcane backend process, including /app/data/arcane.db (the SQLite database containing every user's password hash and API key), enabling escalation to admin and, via Arcane's Docker control plane, RCE on the host. This vulnerability is fixed in 1.19.4.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.31%Up 0.3 points since May 30, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.7

Arcane: Authenticated Arbitrary Host File Read via Docker Compose Include Directives in Arcane

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.4, ProjectService.GetProjectFileContent returns the contents of any Docker Compose include directive declared in a project's compose file before any path-traversal validation runs. Because ProjectService.CreateProject writes attacker-supplied compose content to disk without validating include paths, an authenticated user can create a project whose compose file declares include: ['../../../../etc/passwd'], then read the include via the project file API. The result is arbitrary read of any file readable by the Arcane backend process, including /app/data/arcane.db (the SQLite database containing every user's password hash and API key), enabling escalation to admin and, via Arcane's Docker control plane, RCE on the host. This vulnerability is fixed in 1.19.4.

Record
CVE-2026-47179
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2026-33369 7.7

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.4, ProjectService.GetProjectFileContent returns the contents of any Docker Compose include directive declared in a project's compose file before any path-traversal validation runs. Because ProjectService.CreateProject writes attacker-supplied compose content to disk without validating include paths, an authenticated user can create a project whose compose file declares include: ['../../../../etc/passwd'], then read the include via the project file API. The result is arbitrary read of any file readable by the Arcane backend process, including /app/data/arcane.db (the SQLite database containing every user's password hash and API key), enabling escalation to admin and, via Arcane's Docker control plane, RCE on the host. This vulnerability is fixed in 1.19.4.

Record
EUVD-2026-33369
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-c3px-h233-h6fq 7.7

Arcane Has an Authenticated Arbitrary Host File Read via Docker Compose Include Directives

Summary

ProjectService.GetProjectFileContent returns the contents of any Docker Compose include directive declared in a project's compose file before any path-traversal validation runs. Because ProjectService.CreateProject writes attacker-supplied compose content to disk without validating include paths, an authenticated user can create a project whose compose file declares include: ['../../../../etc/passwd'], then read the include via the project file API. The result is arbitrary read of any file readable by the Arcane backend process, including /app/data/arcane.db (the SQLite database containing every user's password hash and API key), enabling escalation to admin and, via Arcane's Docker control plane, RCE on the host.

Details

Root cause #1 — CreateProject writes compose content without validation (backend/internal/services/project_service.go:1605-1644):

func (s *ProjectService) CreateProject(ctx context.Context, name, composeContent string, envContent *string, user models.User) (*models.Project, error) {
    // ... directory setup ...
    if err := projects.SaveOrUpdateProjectFiles(projectsDirectory, projectPath, composeContent, envContent); err != nil {
        _ = s.db.WithContext(ctx).Delete(proj).Error
        return nil, fmt.Errorf("failed to save project files: %w", err)
    }
    // ...
}

Compare with UpdateProject (project_service.go:2494, :2577), which calls validateComposeContentForUpdate. That validator (line 2599) loads the compose with missingIncludeStubResourceLoaderInternal, which calls ValidateIncludePathForWrite (includes.go:139) and rejects includes outside the project directory. CreateProject bypasses this entirely, so any malicious include: array survives to disk.

Root cause #2 — GetProjectFileContent reads include files before path validation (backend/internal/services/project_service.go:831-872):

includes, parseErr := projects.ParseIncludes(composeFile, envMap, true)
if parseErr == nil {
    for _, inc := range includes {
        if inc.RelativePath == relativePath {
            return project.IncludeFile{
                Path:         inc.Path,
                RelativePath: inc.RelativePath,
                Content:      inc.Content,    // <-- arbitrary file content returned here
            }, nil
        }
    }
}

fullPath := filepath.Join(proj.Path, relativePath)
// ... IsSafeSubdirectory check at line 870 — never reached when include matches ...

Root cause #3 — ParseIncludes reads include files from anywhere by design (backend/pkg/projects/includes.go:24-72):

// Security Model for Include Files:
// - READ: Docker Compose allows include files from anywhere (parent dirs, absolute paths, etc.)
//         We allow reading from any path to maintain compatibility with standard Docker Compose behavior
// - WRITE/DELETE: Restricted to files within the project directory only for security

parseIncludeItemInternal at includes.go:97-101 builds fullPath = filepath.Clean(filepath.Join(baseDir, includePath)) and os.ReadFile(fullPath) at line 105 — no containment check. The returned RelativePath (line 124) is filepath.ToSlash(filepath.Clean(includePath)), which preserves ../../../../etc/passwd verbatim for the equality match in GetProjectFileContent.

Authorization surface: The handler GET /api/environments/{id}/projects/{projectId}/file (backend/internal/huma/handlers/projects.go:268-279) and POST /api/environments/{id}/projects (line 242-253) only declare BearerAuth/ApiKeyAuth. There is no admin-role gate on either handler — GetProjectFile (line 582) and CreateProject (line 524) simply call humamw.GetCurrentUserFromContext. The default user role assigned in users.go:223 is "user" (not admin), and that role is sufficient to exploit.

Resulting primitive: arbitrary read of any file readable by the Arcane backend process (uid/gid of the container). Sensitive targets…

Record
GHSA-c3px-h233-h6fq
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
NVD 7.7

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.4, ProjectService.GetProjectFileContent returns the contents of any Docker Compose include directive declared in a project's compose file before any path-traversal validation runs. Because ProjectService.CreateProject writes attacker-supplied compose content to disk without validating include paths, an authenticated user can create a project whose compose file declares include: ['../../../../etc/passwd'], then read the include via the project file API. The result is arbitrary read of any file readable by the Arcane backend process, including /app/data/arcane.db (the SQLite database containing every user's password hash and API key), enabling escalation to admin and, via Arcane's Docker control plane, RCE on the host. This vulnerability is fixed in 1.19.4.

Record
CVE-2026-47179
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSV 7.7

Arcane: Authenticated Arbitrary Host File Read via Docker Compose Include Directives in Arcane

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.4, ProjectService.GetProjectFileContent returns the contents of any Docker Compose include directive declared in a project's compose file before any path-traversal validation runs. Because ProjectService.CreateProject writes attacker-supplied compose content to disk without validating include paths, an authenticated user can create a project whose compose file declares include: ['../../../../etc/passwd'], then read the include via the project file API. The result is arbitrary read of any file readable by the Arcane backend process, including /app/data/arcane.db (the SQLite database containing every user's password hash and API key), enabling escalation to admin and, via Arcane's Docker control plane, RCE on the host. This vulnerability is fixed in 1.19.4.

Record
CVE-2026-47179
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSVGHSA-c3px-h233-h6fq 7.7

Arcane Has an Authenticated Arbitrary Host File Read via Docker Compose Include Directives

Summary

ProjectService.GetProjectFileContent returns the contents of any Docker Compose include directive declared in a project's compose file before any path-traversal validation runs. Because ProjectService.CreateProject writes attacker-supplied compose content to disk without validating include paths, an authenticated user can create a project whose compose file declares include: ['../../../../etc/passwd'], then read the include via the project file API. The result is arbitrary read of any file readable by the Arcane backend process, including /app/data/arcane.db (the SQLite database containing every user's password hash and API key), enabling escalation to admin and, via Arcane's Docker control plane, RCE on the host.

Details

Root cause #1 — CreateProject writes compose content without validation (backend/internal/services/project_service.go:1605-1644):

func (s *ProjectService) CreateProject(ctx context.Context, name, composeContent string, envContent *string, user models.User) (*models.Project, error) {
    // ... directory setup ...
    if err := projects.SaveOrUpdateProjectFiles(projectsDirectory, projectPath, composeContent, envContent); err != nil {
        _ = s.db.WithContext(ctx).Delete(proj).Error
        return nil, fmt.Errorf("failed to save project files: %w", err)
    }
    // ...
}

Compare with UpdateProject (project_service.go:2494, :2577), which calls validateComposeContentForUpdate. That validator (line 2599) loads the compose with missingIncludeStubResourceLoaderInternal, which calls ValidateIncludePathForWrite (includes.go:139) and rejects includes outside the project directory. CreateProject bypasses this entirely, so any malicious include: array survives to disk.

Root cause #2 — GetProjectFileContent reads include files before path validation (backend/internal/services/project_service.go:831-872):

includes, parseErr := projects.ParseIncludes(composeFile, envMap, true)
if parseErr == nil {
    for _, inc := range includes {
        if inc.RelativePath == relativePath {
            return project.IncludeFile{
                Path:         inc.Path,
                RelativePath: inc.RelativePath,
                Content:      inc.Content,    // <-- arbitrary file content returned here
            }, nil
        }
    }
}

fullPath := filepath.Join(proj.Path, relativePath)
// ... IsSafeSubdirectory check at line 870 — never reached when include matches ...

Root cause #3 — ParseIncludes reads include files from anywhere by design (backend/pkg/projects/includes.go:24-72):

// Security Model for Include Files:
// - READ: Docker Compose allows include files from anywhere (parent dirs, absolute paths, etc.)
//         We allow reading from any path to maintain compatibility with standard Docker Compose behavior
// - WRITE/DELETE: Restricted to files within the project directory only for security

parseIncludeItemInternal at includes.go:97-101 builds fullPath = filepath.Clean(filepath.Join(baseDir, includePath)) and os.ReadFile(fullPath) at line 105 — no containment check. The returned RelativePath (line 124) is filepath.ToSlash(filepath.Clean(includePath)), which preserves ../../../../etc/passwd verbatim for the equality match in GetProjectFileContent.

Authorization surface: The handler GET /api/environments/{id}/projects/{projectId}/file (backend/internal/huma/handlers/projects.go:268-279) and POST /api/environments/{id}/projects (line 242-253) only declare BearerAuth/ApiKeyAuth. There is no admin-role gate on either handler — GetProjectFile (line 582) and CreateProject (line 524) simply call humamw.GetCurrentUserFromContext. The default user role assigned in users.go:223 is "user" (not admin), and that role is sufficient to exploit.

Resulting primitive: arbitrary read of any file readable by the Arcane backend process (uid/gid of the container). Sensitive targets…

Record
GHSA-c3px-h233-h6fq
CVSS 3.1
7.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSVGO-2026-5308 No score

Arcane Has an Authenticated Arbitrary Host File Read via Docker Compose Include Directives in github.com/getarcaneapp/arcane/backend

Arcane Has an Authenticated Arbitrary Host File Read via Docker Compose Include Directives in github.com/getarcaneapp/arcane/backend

Record
GO-2026-5308
Updated
2026-11-02
OSVopenSUSE-SU-2026:21483-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260723T184607 2026-07-23T18:46:07Z (jsc#PED-11136).

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-4730 CVE-2026-33022 GHSA-cv4x-93xx-wgfj
  • GO-2026-4761 CVE-2026-33211 GHSA-j5q5-j9gm-2w5c
  • GO-2026-5102 CVE-2026-45021 GHSA-3vcp-chfh-f6r2
  • GO-2026-5272 CVE-2026-40938 GHSA-94jr-7pqp-xhcq
  • GO-2026-5486 CVE-2026-40924 GHSA-m2cx-gpqf-qf74
  • GO-2026-5542 CVE-2026-40090 GHSA-pj97-4p9w-gx3q
  • GO-2026-5630 CVE-2026-25542 GHSA-rmx9-2pp3-xhcr
  • GO-2026-5643 CVE-2026-40923 GHSA-rx35-6rhx-7858
  • GO-2026-5675 CVE-2026-41492 GHSA-vvf7-6rmr-m29q
  • GO-2026-5711 CVE-2026-40161 GHSA-wjxp-xrpv-xpff
  • GO-2026-5746 CVE-2026-41567 GHSA-x86f-5xw2-fm2r
  • GO-2026-5749 CVE-2026-41328 GHSA-x92x-px7w-4gx4
  • GO-2026-5837 CVE-2026-44840 GHSA-q2m9-6jp9-c6mc
  • GO-2026-5929 CVE-2026-44342 GHSA-26v7-h57m-gh9m
  • GO-2026-5930 CVE-2026-33655 GHSA-6qcr-qxgr-m7fv
  • GO-2026-5933 GHSA-3g4q-2f67-2gvh
  • GO-2026-5934 GHSA-59qp-cfj3-rp64
  • GO-2026-5935 GHSA-7856-g3gv-9wq8
  • GO-2026-5936 CVE-2026-53552 GHSA-26rh-24rg-j3vv
  • GO-2026-5937 CVE-2026-53508 GHSA-2jcc-mxv7-p3f9
  • GO-2026-5938 CVE-2026-53553 GHSA-4g5x-hcwm-82jw
  • GO-2026-5939 CVE-2026-10517 GHSA-698x-9w2p-7vvp
  • GO-2026-5940 CVE-2026-53572 GHSA-6w3m-4hhp-775q
  • GO-2026-5941 CVE-2026-53487 GHSA-gvhc-wv3v-7pf8
  • GO-2026-5942 CVE-2026-46600
  • GO-2026-5944 CVE-2026-50197 GHSA-659f-rgp5-w4wf
  • GO-2026-5945 CVE-2026-6815 GHSA-rmxx-v9rj-vpvg
  • GO-2026-5946 CVE-2026-52831 GHSA-v5px-423j-pf7p
  • GO-2026-5947 CVE-2026-53649 GHSA-xqhv-chqm-fhcc
  • GO-2026-5948 CVE-2026-50554 GHSA-588f-fvcv-xhvf
  • GO-2026-5949 CVE-2026-50553 GHSA-rqrh-8wpv-x7hh
  • GO-2026-5950 CVE-2026-53602 GHSA-339v-266x-79xr
  • GO-2026-5951 CVE-2026-10219 GHSA-6jm8-4fhr-5w64
  • GO-2026-5952 CVE-2026-49834 GHSA-9vcr-p3rj-q5q6
  • GO-2026-5953 CVE-2026-9094 GHSA-c9w5-qp6m-m395
  • GO-2026-5956 CVE-2026-55252 GHSA-h5g6-xmh4-hc37
  • GO-2026-5957 CVE-2026-54158 GHSA-5xfx-xj4h-5p7r
  • GO-2026-5958 CVE-2026-54068 GHSA-gcm7-57gf-953c
  • GO-2026-5959 CVE-2026-54072 GHSA-h29v-hj44-q8cv
  • GO-2026-5961 CVE-2026-54069 GHSA-hvr9-72v2-fff3
  • GO-2026-5962 CVE-2026-54088 GHSA-m93h-4hw7-5qcm
  • GO-2026-5963 CVE-2026-54067 GHSA-mvjr-vv3c-w4qv
  • GO-2026-5964 CVE-2026-54066 GHSA-p4m3-mgmm-c664
  • GO-2026-5965 CVE-2026-54070 GHSA-w7cg-whh7-xp28
  • GO-2026-5966 CVE-2026-54089 GHSA-xqp3-jq6g-x3qm
  • GO-2026-5967 CVE-2026-50551 GHSA-56mp-4f3v-fgj2
  • GO-2026-5968 CVE-2026-54174 GHSA-fpg8-7664-jc5q
  • GO-2026-5969 GHSA-g936-7jqj-mwv8
  • GO-2026-5970 CVE-2026-56852
  • GO-2026-5973 CVE-2026-54250 GHSA-jxr7-mqhw-9p98
  • GO-2026-5974 CVE-2026-44300 GHSA-wmj8-9953-vff5
  • GO-2026-5975 CVE-2026-50018 GHSA-42j2-w334-qxw7
  • GO-2026-5976 CVE-2026-50141 GHSA-g7mm-9vx7-jm7h
  • GO-2026-5977 CVE-2026-50013 GHSA-qrh4-p6v4-mrfg
  • GO-2026-5978 CVE-2026-50125 GHSA-qw5r-ppcg-f8rj
  • GO-2026-5979 CVE-2026-50006 GHSA-xrcf-6jh3-ggvx
  • GO-2026-5980 CVE-2026-50158 GHSA-2c7f-fxww-6w6c
  • GO-2026-5981 GHSA-mqxv-9rm6-w8qc
  • GO-2026-5982 GHSA-pqg7-v6wh-3pfp
  • GO-2026-5984 CVE-2026-53604 GHSA-2p2f-px33-4vv5
  • GO-2026-5985 GHSA-7rx3-5wx3-5v76
  • GO-2026-5986 CVE-2026-61699 GHSA-cm26-5974-52h8
  • GO-2026-5987 CVE-2026-55513 GHSA-g4x6-jcvr-9m3g
  • GO-2026-5988 CVE-2026-54628 GHSA-hwrq-8wxh-q4xv
  • GO-2026-5989 CVE-2026-55512 GHSA-m3cx-mwpg-32jg
  • GO-2026-5990 CVE-2026-54629 GHSA-mf78-3rpf-r784
  • GO-2026-5991 CVE-2026-53603 GHSA-q4vm-pq3q-8wgq
  • GO-2026-5992 CVE-2026-61549 GHSA-qf34-295c-26v8
  • GO-2026-5996 CVE-2026-54450 GHSA-pph6-vfjv-vpjw
  • GO-2026-5997 CVE-2026-54452 GHSA-xgch-x3mx-cm3c
  • GO-2026-5998 CVE-2026-54495 GHSA-398h-7f66-3h4p
  • GO-2026-5999 CVE-2026-10814 GHSA-jh6h-v6mp-h22v
  • GO-2026-6002 CVE-2026-58196 GHSA-pr64-jmmf-jp54
  • GO-2026-6003 CVE-2026-53714 GHSA-22xc-xg2r-9j7v
  • GO-2026-6004 CVE-2026-52833 GHSA-3v79-m2cg-89ww
  • GO-2026-6005 CVE-2026-53715 GHSA-8fv2-88gg-hm7q
  • GO-2026-6006 CVE-2026-53716 GHSA-cxpq-8v7q-cg56 *…
Record
openSUSE-SU-2026:21483-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/getarcaneapp/arcane/backend
Go
 through 1.19.3
1.19.4
github.com/getarcaneapp/arcane/backend
Go
 before 1.19.4
1.19.4
govulncheck-vulndb
openSUSE:Leap 16.0
From an advisory covering 1734 CVEs
 before 0.0.20260723T184607-160000.1.1
0.0.20260723T184607-160000.1.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-47179 is a high vulnerability (CVSS 7.7) in Getarcaneapp Arcane, published May 28, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 23rd percentile. Fixed in github.com/getarcaneapp/arcane/backend 1.19.4.

References

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