CVE-2026-27638— ActualBudget missing authorization in sync endpoints allows cross-user budget file access in multi-user mode
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-27638
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
ActualBudget missing authorization in sync endpoints allows cross-user budget file access in multi-user mode
Source: NVD (National Vulnerability Database)
Vulnerability Description
Actual is a local-first personal finance tool. Prior to version 26.2.1, in multi-user mode (OpenID), the sync API endpoints (`/sync/*`) don't verify that the authenticated user owns or has access to the file being operated on. Any authenticated user can read, modify, and overwrite any other user's budget files by providing their file ID. Version 26.2.1 patches the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
actual 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
actual是Actual开源的一个个人理财工具。 actual 26.2.1之前版本存在安全漏洞，该漏洞源于同步API端点未验证文件所有权，可能导致任意用户预算文件被读取或修改。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| actualbudget | actual | < 26.2.1 | - |
II. Public POCs for CVE-2026-27638
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-27638
请登录查看更多情报信息。
IV. Related Vulnerabilities
Same weakness: CWE-862
- CVE-2021-47932
WordPress TheCartPress 1.5.3.6 Privilege Escalation Unauthen - CVE-2025-15634
HCL BigFix WebUI is affected by a missing authorization vuln - CVE-2026-42297
Argo Workflows Is Missing Authorization in Sync ConfigMap Pr - CVE-2026-42174
Kirby: User avatar creation, replacement and deletion are no - CVE-2026-42137
Kirby: `pages.access/list` and `files.access/list` permissio
V. Comments for CVE-2026-27638
No comments yet