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Vulnerability Details :

CVE-2026-27638

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-26 Feb, 2026 | 22:14
Updated At-26 Feb, 2026 | 22:14
Rejected At-
Credits

ActualBudget missing authorization in sync endpoints allows cross-user budget file access in multi-user mode

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:26 Feb, 2026 | 22:14
Updated At:26 Feb, 2026 | 22:14
Rejected At:
▼CVE Numbering Authority (CNA)
ActualBudget missing authorization in sync endpoints allows cross-user budget file access in multi-user mode

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.

Affected Products
Vendor
actualbudget
Product
actual
Versions
Affected
  • < 26.2.1
Problem Types
TypeCWE IDDescription
CWECWE-862CWE-862: Missing Authorization
Type: CWE
CWE ID: CWE-862
Description: CWE-862: Missing Authorization
Metrics
VersionBase scoreBase severityVector
4.05.7MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Version: 4.0
Base score: 5.7
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrv
x_refsource_CONFIRM
https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08
x_refsource_MISC
https://github.com/actualbudget/actual/releases/tag/v26.2.1
x_refsource_MISC
Hyperlink: https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrv
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08
Resource:
x_refsource_MISC
Hyperlink: https://github.com/actualbudget/actual/releases/tag/v26.2.1
Resource:
x_refsource_MISC
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:26 Feb, 2026 | 23:16
Updated At:27 Feb, 2026 | 17:03

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.7MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.17.1HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Type: Secondary
Version: 4.0
Base score: 5.7
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CPE Matches

actualbudget
actualbudget
>>actual>>Versions before 26.2.1(exclusive)
cpe:2.3:a:actualbudget:actual:*:*:*:*:*:node.js:*:*
Weaknesses
CWE IDTypeSource
CWE-862Primarysecurity-advisories@github.com
CWE ID: CWE-862
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08security-advisories@github.com
Patch
https://github.com/actualbudget/actual/releases/tag/v26.2.1security-advisories@github.com
Product
Release Notes
https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrvsecurity-advisories@github.com
Exploit
Vendor Advisory
Hyperlink: https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/actualbudget/actual/releases/tag/v26.2.1
Source: security-advisories@github.com
Resource:
Product
Release Notes
Hyperlink: https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrv
Source: security-advisories@github.com
Resource:
Exploit
Vendor Advisory

Change History

0
Information is not available yet

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