# CVE-2026-123623: Grida through 0.0.24 Missing Authorization in Forms File-Preview API

Status: published. Published: 2026-11-06. Updated: 2026-11-11.

Grida through 0.0.24 contains a missing authorization vulnerability in the Forms file-preview API routes that allows unauthenticated attackers to read other organizations' form response files. Attackers can use form and field IDs exposed in public form payloads with a chosen path parameter to obtain service-role signed URLs for attachments and connected Supabase bucket objects.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/gridaco/grida/pull/1108
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/gridaco/grida/commit/05f5a54c31a6662942a42b50e34a329ab3642fe1

## Affected products and versions

- gridaco / grida (gridaco/grida): ≥ 0; ≤ 0.0.24 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.2 (high); CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: CNA: VulnCheck

- CVSS 4.0: 8.2 (high); CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.39% as of 2026-11-10; percentile 33.13%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-862

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/gridaco/grida/issues/1107 (CNA: VulnCheck; issue-tracking)

- https://github.com/gridaco/grida (CNA: VulnCheck; product)

- https://github.com/gridaco/grida/pull/1108 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/gridaco/grida/commit/05f5a54c31a6662942a42b50e34a329ab3642fe1 (CNA: VulnCheck; patch)

- https://github.com/gridaco/grida/blob/v0.0.24/editor/app/(api)/private/editor/%5Bform_id%5D/fields/%5Bfield_id%5D/file/preview/src/route.ts#L27-L101 (CNA: VulnCheck; technical-description)

- https://hackmd.io/@hieund/grida-forms-file-preview-missing-authz (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/grida-through-0.0.24-missing-authorization-in-forms-file-preview-api (CNA: VulnCheck; third-party-advisory)

- https://github.com/gridaco/grida (disclosure@vulncheck.com)

- https://github.com/gridaco/grida/blob/v0.0.24/editor/app/(api)/private/editor/%5Bform_id%5D/fields/%5Bfield_id%5D/file/preview/src/route.ts#L27-L101 (disclosure@vulncheck.com)

- https://github.com/gridaco/grida/commit/05f5a54c31a6662942a42b50e34a329ab3642fe1 (disclosure@vulncheck.com)

- https://github.com/gridaco/grida/issues/1107 (disclosure@vulncheck.com)

- https://github.com/gridaco/grida/pull/1108 (disclosure@vulncheck.com)

- https://hackmd.io/@hieund/grida-forms-file-preview-missing-authz (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/grida-through-0.0.24-missing-authorization-in-forms-file-preview-api (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-123623; retrieved 2026-11-11; source updated 2026-11-11

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-123623; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-123623; retrieved 2026-11-11; source updated Not reported

Revision: 2206de24970f9449f81900b7d85995bf80553f5950ad278431d63f5c2cc711e4

Canonical: https://y2.dev/cve/CVE-2026-123623

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.