Arcane: Environment access token bypasses the admin-required authorization gate on /api/debug/pprof

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS

• CVE-2026-96628: 0.20% estimated exploitation activity in the next 30 days; percentile 10.40 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Arcane v2.10.2 contains an authorization inconsistency in AuthMiddleware.managerAuth. When a request supplies a valid environment access token through the X-Arcane-Agent-Token header, managerAuth resolves the associated environment, installs an environment-scoped permission set, and immediately calls next(c). This occurs before the middleware evaluates the AdminRequired option and verifies that the caller is a global administrator. As a result, an environment-scoped access token can access routes protected with WithAdminRequired(), despite the corresponding EnvironmentPermissionSet intentionally containing no global or sudo permissions. In v2.10.2, the affected admin-only surface is the manager's Go pprof diagnostic interface under: /api/debug/pprof/ This exposes diagnostic and runtime profiling information that the application explicitly intends to restrict to global administrators. The issue is an incorrect authorization vulnerability (CWE-863). Details 1. Environment…

Published by the source

16 Oct 2026, 21:12 UTC

Last modified by the source

19 Oct 2026, 21:31 UTC

Source last checked

26 Oct 2026, 15:32 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-mp22-58ff-6fhr

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GO-2026-6806

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-mp22-58ff-6fhr

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# Patch Next advisory brief: CVE-2026-96628

Advisory: Arcane: Environment access token bypasses the admin-required authorization gate on `/api/debug/pprof`
IDs: CVE-2026-96628, GHSA-mp22-58ff-6fhr
Record: https://patchnext.com/advisories/cve-2026-96628 (revision 3, source checked 26 Oct 2026, 15:32 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: github.com/getarcaneapp/arcane/backend/v2 2.11.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/getarcaneapp/arcane/backend/v2: affected < 2.11.0; fixed in 2.11.0
- Go github.com/getarcaneapp/arcane/backend: affected every version

## Suggested inspection (read-only)
- Go github.com/getarcaneapp/arcane/backend/v2: check the installed version with your package manager.
- Go github.com/getarcaneapp/arcane/backend: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/getarcaneapp/arcane/backend/v2, github.com/getarcaneapp/arcane/backend.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GO-2026-6806 (OSV record GO-2026-6806 lists affected ranges: Go github.com/getarcaneapp/arcane/backend >=0; Go github.com/getarcaneapp/arcane/backend/v2 >=0 <2.11.0 (fixed))
- Verified: https://osv.dev/vulnerability/GHSA-mp22-58ff-6fhr (OSV record GHSA-mp22-58ff-6fhr lists affected ranges: Go github.com/getarcaneapp/arcane/backend/v2 >=0 <2.11.0 (fixed))
- Verified: https://github.com/advisories/GHSA-mp22-58ff-6fhr (GitHub-reviewed advisory GHSA-mp22-58ff-6fhr lists affected ranges: Go github.com/getarcaneapp/arcane/backend/v2 >=0 <2.11.0)

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