CVE-2026-27638

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

CVSS 5.7 MEDIUMEPSS 0.3%CWE-862

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 5.7EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

26 fev 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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.

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

Produtos afetados

actualbudget · actual

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Referências

https://github.com/actualbudget/actual/commit/9966c024cb75f57943193cac8e42f401efed9d08 https://github.com/actualbudget/actual/releases/tag/v26.2.1 https://github.com/actualbudget/actual/security/advisories/GHSA-qmjj-p7m9-wjrv