Information disclosure in Elabftw
CVE-2026-28511
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Elabftw — versions < 5.4.2
Weakness classification (CWE)
References
- github.com/elabftw/elabftw/security/advisories/GHSA-wm4r-p2jg-2mj3 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-28511?
- CVE-2026-28511 is a medium-severity vulnerability in Elabftw, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-06-01.
- How severe is CVE-2026-28511?
- Medium severity. CVSS v3 base score is 4.3 out of 10.