Auth bypass in Elabftw
CVE-2021-43834
eLabFTW is an electronic lab notebook manager for research teams. In versions prior to 4.2.0 there is a vulnerability which allows an attacker to authenticate as an existing user, if that user was created using a single sign-on authentication option such as LDAP or SAML. It impacts instances where LDAP or SAML is used for authentication instead of the (default) local password mechanism. Users should upgrade to at least version 4.2.0.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.010 (60.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Elabftw — versions < 4.2.0
Weakness classification (CWE)
References
- github.com/elabftw/elabftw/releases/tag/4.2.0 (Third Party Advisory, Release Notes)
- github.com/elabftw/elabftw/security/advisories/GHSA-98rp-gx76-33ph (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-43834?
- CVE-2021-43834 is a critical-severity vulnerability in Elabftw, classified under Improper Authentication. CVSS score: 9.1/10. Published 2021-12-16.
- How severe is CVE-2021-43834?
- Critical severity. CVSS v3 base score is 9.1 out of 10.