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CVE-2026-47125

Arcane: Missing admin authorization on global variables endpoint

8.8 HighFix available

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.2, the PUT /api/environments/{id}/templates/variables endpoint, which writes the system-wide .env.global file used for variable substitution in every project's compose file, is missing an admin authorization check. Any authenticated non-admin user can call this endpoint with their bearer token or API key and overwrite the global environment variables that are merged into every project deployment. By overriding values like REGISTRY, IMAGE, DATABASE_URL, or SECRET_KEY that other users reference via ${VAR} in compose files, an attacker can redirect image pulls to attacker-controlled registries (supply-chain RCE on the Docker host), exfiltrate database credentials, or disrupt all projects. This vulnerability is fixed in 1.19.2.

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
High
Availability
High

Exploit likelihood

0.24%Up 0.2 points since May 30, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.8

Arcane: Missing admin authorization on global variables endpoint

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.2, the PUT /api/environments/{id}/templates/variables endpoint, which writes the system-wide .env.global file used for variable substitution in every project's compose file, is missing an admin authorization check. Any authenticated non-admin user can call this endpoint with their bearer token or API key and overwrite the global environment variables that are merged into every project deployment. By overriding values like REGISTRY, IMAGE, DATABASE_URL, or SECRET_KEY that other users reference via ${VAR} in compose files, an attacker can redirect image pulls to attacker-controlled registries (supply-chain RCE on the Docker host), exfiltrate database credentials, or disrupt all projects. This vulnerability is fixed in 1.19.2.

Record
CVE-2026-47125
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-862
Updated
2026-11-02
EUVDEUVD-2026-33370 8.8

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.2, the PUT /api/environments/{id}/templates/variables endpoint, which writes the system-wide .env.global file used for variable substitution in every project's compose file, is missing an admin authorization check. Any authenticated non-admin user can call this endpoint with their bearer token or API key and overwrite the global environment variables that are merged into every project deployment. By overriding values like REGISTRY, IMAGE, DATABASE_URL, or SECRET_KEY that other users reference via ${VAR} in compose files, an attacker can redirect image pulls to attacker-controlled registries (supply-chain RCE on the Docker host), exfiltrate database credentials, or disrupt all projects. This vulnerability is fixed in 1.19.2.

Record
EUVD-2026-33370
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-jpjh-jm2p-39hh 8.8

Arcane: Missing admin authorization on global variables endpoint

Summary

The PUT /api/environments/{id}/templates/variables endpoint, which writes the system-wide .env.global file used for variable substitution in every project's compose file, is missing an admin authorization check. Any authenticated non-admin user can call this endpoint with their bearer token or API key and overwrite the global environment variables that are merged into every project deployment. By overriding values like REGISTRY, IMAGE, DATABASE_URL, or SECRET_KEY that other users reference via ${VAR} in compose files, an attacker can redirect image pulls to attacker-controlled registries (supply-chain RCE on the Docker host), exfiltrate database credentials, or disrupt all projects.

Details

The endpoint is registered at backend/internal/huma/handlers/templates.go:374:

huma.Register(api, huma.Operation{
    OperationID: "updateGlobalVariables",
    Method:      "PUT",
    Path:        "/environments/{id}/templates/variables",
    ...
    Security: []map[string][]string{
        {"BearerAuth": {}},
        {"ApiKeyAuth": {}},
    },
}, h.UpdateGlobalVariables)

The handler at backend/internal/huma/handlers/templates.go:889 performs no role check:

func (h *TemplateHandler) UpdateGlobalVariables(ctx context.Context, input *UpdateGlobalVariablesInput) (*UpdateGlobalVariablesOutput, error) {
    if h.templateService == nil {
        return nil, huma.Error500InternalServerError("service not available")
    }

    if input.EnvironmentID != "0" {
        return h.updateGlobalVariablesForRemoteEnvironmentInternal(ctx, input)
    }

    if err := h.templateService.UpdateGlobalVariables(ctx, input.Body.Variables); err != nil {
        return nil, huma.Error500InternalServerError((&common.GlobalVariablesUpdateError{Err: err}).Error())
    }
    ...
}

This is anomalous compared to every other admin-sensitive handler in the codebase, all of which begin with if err := checkAdmin(ctx); err != nil { return nil, err } (see users.go, events.go, swarm.go, settings.go, apikeys.go, environments.go, notifications.go, container_registries.go, git_repositories.go, system.go). The helper exists at backend/internal/huma/handlers/helpers.go:12 but is never invoked from templates.go.

The auth middleware at backend/internal/huma/middleware/auth.go:192-254 only validates that some authenticated user is present (Bearer JWT, API key, or environment access token); it does not enforce roles. Role enforcement is the responsibility of each handler.

That this endpoint is intended to be admin-only is evidenced by the UI customization search at backend/internal/huma/handlers/customize.go:82-91 and :106-114, which explicitly hides the variables and registries categories from non-admin users:

if !humamw.IsAdminFromContext(ctx) {
    filtered := []category.Category{}
    for _, cat := range results.Results {
        if cat.ID != "registries" && cat.ID != "variables" {
            filtered = append(filtered, cat)
        }
    }
    results.Results = filtered
    ...
}

The corresponding container_registries.go handlers all enforce admin via checkAdmin() (e.g. container_registries.go:273,329,360,387,442); the equivalent enforcement for the global-variables write was forgotten.

The service layer at backend/internal/services/template_service.go:1107 writes attacker-supplied keys/values to <projectsDirectory>/.env.global:

func (s *TemplateService) UpdateGlobalVariables(ctx context.Context, vars []env.Variable) error {
    envPath, err := s.getGlobalVariablesPath(ctx)
    ...
    for _, v := range vars {
        if strings.TrimSpace(v.Key) == "" { continue }
        key := strings.TrimSpace(v.Key)
        value := strings.TrimSpace(v.Value)
        if strings.ContainsAny(value, " \t\n\r#") {
            value = fmt.Sprintf(`"%s"`, strings.ReplaceAll(value, `"`, `\"`))
        }
        _, _ = fmt.Fprintf(&builder, "%s=%s\n", key, value)
    }
    if…
Record
GHSA-jpjh-jm2p-39hh
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-862
Updated
2026-11-02
NVD 8.8

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.2, the PUT /api/environments/{id}/templates/variables endpoint, which writes the system-wide .env.global file used for variable substitution in every project's compose file, is missing an admin authorization check. Any authenticated non-admin user can call this endpoint with their bearer token or API key and overwrite the global environment variables that are merged into every project deployment. By overriding values like REGISTRY, IMAGE, DATABASE_URL, or SECRET_KEY that other users reference via ${VAR} in compose files, an attacker can redirect image pulls to attacker-controlled registries (supply-chain RCE on the Docker host), exfiltrate database credentials, or disrupt all projects. This vulnerability is fixed in 1.19.2.

Record
CVE-2026-47125
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-862
Updated
2026-11-02
OSV 8.8

Arcane: Missing admin authorization on global variables endpoint

Arcane is an interface for managing Docker containers, images, networks, and volumes. Prior to 1.19.2, the PUT /api/environments/{id}/templates/variables endpoint, which writes the system-wide .env.global file used for variable substitution in every project's compose file, is missing an admin authorization check. Any authenticated non-admin user can call this endpoint with their bearer token or API key and overwrite the global environment variables that are merged into every project deployment. By overriding values like REGISTRY, IMAGE, DATABASE_URL, or SECRET_KEY that other users reference via ${VAR} in compose files, an attacker can redirect image pulls to attacker-controlled registries (supply-chain RCE on the Docker host), exfiltrate database credentials, or disrupt all projects. This vulnerability is fixed in 1.19.2.

Record
CVE-2026-47125
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-862
Updated
2026-11-02
OSVGHSA-jpjh-jm2p-39hh 8.8

Arcane: Missing admin authorization on global variables endpoint

Summary

The PUT /api/environments/{id}/templates/variables endpoint, which writes the system-wide .env.global file used for variable substitution in every project's compose file, is missing an admin authorization check. Any authenticated non-admin user can call this endpoint with their bearer token or API key and overwrite the global environment variables that are merged into every project deployment. By overriding values like REGISTRY, IMAGE, DATABASE_URL, or SECRET_KEY that other users reference via ${VAR} in compose files, an attacker can redirect image pulls to attacker-controlled registries (supply-chain RCE on the Docker host), exfiltrate database credentials, or disrupt all projects.

Details

The endpoint is registered at backend/internal/huma/handlers/templates.go:374:

huma.Register(api, huma.Operation{
    OperationID: "updateGlobalVariables",
    Method:      "PUT",
    Path:        "/environments/{id}/templates/variables",
    ...
    Security: []map[string][]string{
        {"BearerAuth": {}},
        {"ApiKeyAuth": {}},
    },
}, h.UpdateGlobalVariables)

The handler at backend/internal/huma/handlers/templates.go:889 performs no role check:

func (h *TemplateHandler) UpdateGlobalVariables(ctx context.Context, input *UpdateGlobalVariablesInput) (*UpdateGlobalVariablesOutput, error) {
    if h.templateService == nil {
        return nil, huma.Error500InternalServerError("service not available")
    }

    if input.EnvironmentID != "0" {
        return h.updateGlobalVariablesForRemoteEnvironmentInternal(ctx, input)
    }

    if err := h.templateService.UpdateGlobalVariables(ctx, input.Body.Variables); err != nil {
        return nil, huma.Error500InternalServerError((&common.GlobalVariablesUpdateError{Err: err}).Error())
    }
    ...
}

This is anomalous compared to every other admin-sensitive handler in the codebase, all of which begin with if err := checkAdmin(ctx); err != nil { return nil, err } (see users.go, events.go, swarm.go, settings.go, apikeys.go, environments.go, notifications.go, container_registries.go, git_repositories.go, system.go). The helper exists at backend/internal/huma/handlers/helpers.go:12 but is never invoked from templates.go.

The auth middleware at backend/internal/huma/middleware/auth.go:192-254 only validates that some authenticated user is present (Bearer JWT, API key, or environment access token); it does not enforce roles. Role enforcement is the responsibility of each handler.

That this endpoint is intended to be admin-only is evidenced by the UI customization search at backend/internal/huma/handlers/customize.go:82-91 and :106-114, which explicitly hides the variables and registries categories from non-admin users:

if !humamw.IsAdminFromContext(ctx) {
    filtered := []category.Category{}
    for _, cat := range results.Results {
        if cat.ID != "registries" && cat.ID != "variables" {
            filtered = append(filtered, cat)
        }
    }
    results.Results = filtered
    ...
}

The corresponding container_registries.go handlers all enforce admin via checkAdmin() (e.g. container_registries.go:273,329,360,387,442); the equivalent enforcement for the global-variables write was forgotten.

The service layer at backend/internal/services/template_service.go:1107 writes attacker-supplied keys/values to <projectsDirectory>/.env.global:

func (s *TemplateService) UpdateGlobalVariables(ctx context.Context, vars []env.Variable) error {
    envPath, err := s.getGlobalVariablesPath(ctx)
    ...
    for _, v := range vars {
        if strings.TrimSpace(v.Key) == "" { continue }
        key := strings.TrimSpace(v.Key)
        value := strings.TrimSpace(v.Value)
        if strings.ContainsAny(value, " \t\n\r#") {
            value = fmt.Sprintf(`"%s"`, strings.ReplaceAll(value, `"`, `\"`))
        }
        _, _ = fmt.Fprintf(&builder, "%s=%s\n", key, value)
    }
    if…
Record
GHSA-jpjh-jm2p-39hh
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-862
Updated
2026-11-02
OSVGO-2026-5476 No score

Arcane: Missing admin authorization on global variables endpoint in github.com/getarcaneapp/arcane/backend

Arcane: Missing admin authorization on global variables endpoint in github.com/getarcaneapp/arcane/backend

Record
GO-2026-5476
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 1.19.1
1.19.2
github.com/getarcaneapp/arcane/backend
Go
 before 1.19.2
1.19.2
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-2026-47125 is a high vulnerability (CVSS 8.8) in Getarcaneapp Arcane, published May 23, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 15th percentile. Fixed in github.com/getarcaneapp/arcane/backend 1.19.2.

References

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