CVE-2026-125749 | BDVDB-2026-402987 Detail
vas3kTaxHacker
Description#
TaxHacker through 0.8.5 contains an insecure direct object reference vulnerability in app/(app)/settings/actions.ts that allows authenticated users to modify other users' data by supplying an arbitrary userId. Attackers can invoke Server Actions like deleteCategoryAction or editFieldAction with a victim's UUID to delete categories, clear transaction assignments, or alter LLM prompts.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact low. Attack vector: network.
Weaknesses#
- CWE-639 Authorization Bypass Through User-Controlled Key
References#
- https://github.com/vas3k/TaxHacker/issues/204
- https://github.com/vas3k/TaxHacker/commit/d84a912f3a06b141cc275bb07115a204e7f10128
- https://github.com/vas3k/TaxHacker/blob/v0.8.5/app/(app)/settings/actions.ts#L117-L306
- https://hackmd.io/@hieund/taxhacker-settings-crud-actions-cross-user-authz
- https://www.vulncheck.com/advisories/taxhacker-through-0.8.5-idor-via-settings-server-actions-userid
- https://hackmd.io/@hieund/cve-2026-125749-taxhacker-settings-crud-actions-cross-user-authz
Exploit#
History#
- Version 1Record published in the CVE List.