cve.bz

CVE-2026-27638

5.7 mediumEPSS 0.3%

Medium (5.7) in actualbudget actual. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in @actual-app/sync-server 26.2.1.

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.

Severity

CVSS 4.0

5.7 medium
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

CVSS 3.1

7.1 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-31)
CWE
CWE-862
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-qmjj-p7m9-wjrvnpm@actual-app/sync-server<26.2.126.2.1

References

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