CVE-2026-125398 | BDVDB-2026-402642 Detail
CoreBunchInstatic
Description#
Instatic before 0.0.21 contains an authorization bypass vulnerability in handleRowAuthor that allows authenticated users to skip table-level access checks by loading rows with getDataRow() instead of loadRowForAccess(). Attackers holding content.edit.any but lacking data.system.tables.read can send PATCH requests to /admin/api/cms/data/rows/:id/author to read system-table rows and reassign their authors.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact low, availability impact none. Attack vector: network.
Weaknesses#
- CWE-862 Missing Authorization
References#
- https://github.com/CoreBunch/Instatic/security/advisories/GHSA-m425-wmrc-4v4v
- https://github.com/CoreBunch/Instatic/commit/ff1e51eb59c860864fa24e8c3e2716b56314f3ad
- https://github.com/CoreBunch/Instatic/releases/tag/v0.0.21
- https://github.com/CoreBunch/Instatic/blob/v0.0.20/server/handlers/cms/data/rows.ts#L378-L398
- https://www.vulncheck.com/advisories/instatic-before-0.0.21-authorization-bypass-via-row-author-reassignment-endpoint
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.