# CVE-2026-77152: Field Collection for Drupal 7 access bypass via missing parent entity access check

Status: published. Published: 2026-10-30. Updated: 2026-11-06.

Improper Authorization vulnerability in Drupal Field Collection for Drupal 7 allows a user with the "edit field collections" permission to bypass access control on the parent (host) entity.

The access check for field collection items (field_collection_item_access()) granted edit and delete access to any user holding the "edit field collections" permission without verifying the user's access to the host entity. As a result, a user with "edit field collections" but without edit/update access to the host entity (for example a node they cannot edit) could edit or delete field collection items attached to that entity, bypassing the intended entity/node access restrictions. The fix requires access to the parent entity in addition to the field collection permission.



This issue affects Field Collection for Drupal 7: version 7.x-1.0 up to and including 7.x-1.2.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Drupal / Field Collection for Drupal 7: ≥ 7.x-1.0; ≤ 7.x-1.2 (affected, custom). Source: CNA: drupal

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N; source: CNA: drupal

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/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: mlhess@drupal.org

- CISA KEV: No listing in collected sources

- EPSS: 0.23% as of 2026-11-06; percentile 13.68%

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

- Weaknesses: CWE-285

## Exploit evidence

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

## References

- https://www.herodevs.com/vulnerability-directory/cve-2026-77152 (CNA: drupal; third-party-advisory)

- https://d7es.tag1.com/security-advisories?field_project_target_id=96 (CNA: drupal; third-party-advisory)

- https://d7es.tag1.com/security-advisories?field_project_target_id=96 (mlhess@drupal.org)

- https://www.herodevs.com/vulnerability-directory/cve-2026-77152 (mlhess@drupal.org)

## Provenance

- CNA: drupal: https://www.cve.org/CVERecord?id=CVE-2026-77152; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77152; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-77152; retrieved 2026-11-06; source updated Not reported

Revision: 956ff6d7030ea18ae4ba2a1c580b5517160cdfeb7912fec974a67e958f22a6bd

Canonical: https://y2.dev/cve/CVE-2026-77152

## 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.