CVE-2026-28511 elabftw has entry title leakage through autocompletion search
Authenticated users can view titles of unauthorized resources via search, potentially leaking sensitive project or patient identifiers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-28511?
CVE-2026-28511 is a medium-severity vulnerability in elabftw, published on 1 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
eLabFTW is an open source electronic lab notebook. Prior to version 5.4.2, in certain cases, an authenticated user performing a numeric reference/search can return results that include resources the requesting user is not authorized to view. The exposed information is limited (only the title). Attempts to access the underlying protected resource content remain blocked by authorization checks. Version 5.4.2 fixes the issue.
# Affected Scope
Cross-scope visibility of titles. No confirmed bypass of content-level access controls
# Preconditions
An authenticated user account
No special privileges required beyond standard access
# Impact
This may enable unauthorized disclosure of sensitive information if confidential data is included in resource titles. Examples could include project names, patient identifiers, or other regulated information embedded in titles.
Weakness: CWE-200
Which versions are affected by CVE-2026-28511?
It affects 1 product.
Products include Elabftw Elabftw.
How do I fix CVE-2026-28511?
No fix has been published for CVE-2026-28511 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-28511 being exploited?
There is no known exploitation of CVE-2026-28511 in the wild and no public exploit code.
Other vulnerabilities in elabftw
- CVE-2021-43834 Incorrect Authentication in elabftw
- CVE-2024-28100 Stored Cross-site Scripting leading to arbitrary actions taken on behalf of users in elabftw
- CVE-2019-12185 File upload in n/a
- CVE-2024-25632 Unauthorised granting of administrator privileges over arbitrary teams under certain circumstances
- CVE-2025-25206 Incorrect input validation could allow an authenticated user to read sensitive information
Sources
Also known as GHSA-wm4r-p2jg-2mj3.