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Authorization Bypass (IDOR)Weakness · CWE-639

CVE-2026-57943

MEDIUM · 5.9 CVSS v3.1 Published 2026-06-29
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
65/100
Remediation priority · Elevated
Remotely reachable Zero-click Patch available 7 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
LibrePhotos before 1.0.0 contains a broken object level authorization vulnerability in the SetPhotosShared endpoint that allows authenticated users to grant themselves access to other users' private photos by bypassing ownership validation. Attackers can manipulate shared_to relations without proper owner checks to read arbitrary private photos belonging to other users.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-639

The application uses a user-supplied identifier to look up a record without checking that the requester actually owns it, so changing the identifier in a request returns someone else's data. This is the classic insecure-direct-object-reference — the change-the-ID-in-the-URL bug. Remediation is authorizing every object access against the acting user, not merely confirming they are logged in.

General guidance for the authorization bypass (idor) class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix Moderate confidence

1.0.0 or later

  1. 1. Back up your current LibrePhotos database and configuration files before upgrading.
  2. 2. Check your current LibrePhotos version to confirm it is below 1.0.0 using your deployment method (e.g., docker ps, pip show, or system package manager).
  3. 3. For Docker deployments: Update your docker-compose.yml to use the latest image tag (e.g., libphotos:latest or v1.0.0) and run 'docker-compose pull' followed by 'docker-compose up -d'.
  4. 4. For pip installations: Run 'pip install --upgrade librephotos' or 'pip install librephotos==1.0.0'.
  5. 5. For other installation methods: Follow the official upgrade documentation for your specific setup.
  6. 6. Verify the upgrade was successful by checking the application version in the UI or via API.
  7. 7. Test that the SetPhotosShared endpoint now properly validates ownership before granting access to photos.
Caveat Review release notes for 1.0.0 to check for any breaking changes in configuration formats or dependencies

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-57943 in production — separate from our analysis above.

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