Read the docs
TI-2026-41382 Aliases CVE-2026-57449GHSA-m62c-5q34-f3cf

Information disclosure in actualbudget actual

Priority MEDIUM 64CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure, Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-284.

Summary

Actual is a local-first personal finance tool. Prior to 26.7.0, Actual Sync Server's CORS proxy is intended to let authenticated users fetch resources only from repositories listed in the official plugin allowlist. When `ACTUAL_GITHUB_TOKEN` is configured, the proxy automatically attaches the server's GitHub token to GitHub requests. The GitHub API allowlist check uses a raw `startsWith()` prefix test for `/repos/{owner}/{repo}` without requiring a path boundary after the repository name. If an allowlisted public plugin repository is `https://github.com/acme/plugin`, the proxy also accepts GitHub API URLs. Those URLs are outside the allowlisted repository but still pass because their API path starts with `/repos/acme/plugin`. The proxy then forwards the request with the server's `ACTUAL_GITHUB_TOKEN`, allowing any authenticated Actual user to read private GitHub resources reachable by that token. Version 26.7.0 fixes the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00258 17th percentileScored 2026-11-07
Fix Fixed actual (actualbudget): 26.7.0@actual-app/sync-server (npm): 26.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
actualbudgetactualbefore 26.7.026.7.0Patch availableCNA
—@actual-app/sync-server (npm)before 26.7.026.7.0Patch availableGHSA-m62c-5q34-f3cf
  • actual Vendoractualbudget Affected before 26.7.0 Fixed in 26.7.0 Patch available CNA
  • @actual-app/sync-server (npm) Vendor— Affected before 26.7.0 Fixed in 26.7.0 Patch available GHSA-m62c-5q34-f3cf

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:actualbudget:actual:*:*:*:*:*:*:*:*——actualbudget
  • cpe:2.3:a:actualbudget:actual:*:*:*:*:*:*:*:* Versions — — ·actualbudget

Remediation

  • Fix · CNA actual (actualbudget) Fixed in 26.7.0
  • Fix · GHSA-m62c-5q34-f3cf @actual-app/sync-server (npm) Fixed in 26.7.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-57449
  2. 2026-10-07 Alias added: GHSA-m62c-5q34-f3cf
  3. 2026-10-07 Fix available: npm/@actual-app/[email protected] · GHSA-m62c-5q34-f3cf
  4. 2026-10-07 CVSS score added · GHSA-m62c-5q34-f3cf
  5. 2026-10-07 Weakness changed · GHSA-m62c-5q34-f3cf
  6. 2026-10-07 3 new references · GHSA-m62c-5q34-f3cf

References

Advisory 1

Other 2

  • TI-2026-21972 ActualBudget server is Missing Authentication for SimpleFIN and Pluggy AI bank sync endpoints CVSS 4.0CRITICAL 9.2
  • TI-2026-25729 Actual has Privilege Escalation via 'change-password' Endpoint on OpenID-Migrated Servers CVSS 3.1HIGH 8.8
  • TI-2026-36430 Actual: Disabled OpenID users keep access through existing session tokens CVSS 3.1HIGH 8.3
  • TI-2026-36833 Actual: Shared users can perform owner-only file management actions CVSS 4.0HIGH 7.2
  • TI-2026-22020 ActualBudget missing authorization in sync endpoints allows cross-user budget file access in multi-user mode CVSS 4.0MEDIUM 5.7
  • TI-2026-02669 Actual Sync Server 26.2.1 - Authenticated Path Traversal CVSS 4.0MEDIUM 5.3
See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences