Access Control Flaw in Immich Affects Album Permissions
CVE-2026-59258

7.2HIGH

Key Information:

Vendor

Immich-app

Status
Immich
Vendor
CVE Published:
15 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-59258?

Immich versions before 3.0.3 are susceptible to a broken access control vulnerability in the PUT /albums/:id/user/:userId endpoint. This issue allows users with editor access to improperly alter member roles within shared albums, enabling them to demote the actual album owner to an editor position while promoting themselves to the owner role. Consequently, attackers can gain extensive control over album management, including the ability to delete or evict members.

Affected Version(s)

immich 0 < 3.0.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-59258 - Proof of Concept

References

https://github.com/immich-app/immich/issues/29857
technical-descriptionexploit
https://github.com/immich-app/immich/releases/tag/v3.0.3
release-notes
https://github.com/immich-app/immich/pull/29883
issue-tracking

CVSS V4

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.