CVE-2021-43834
9.1 · CRITICALOverview
CVE-2021-43834 is a critical-severity vulnerability affecting elabftw elabftw. It was published on December 16, 2021 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from elabftw. Update elabftw to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| elabftw | elabftw | >= 0, < 4.2.0 | Affected |
Frequently Asked Questions
What is CVE-2021-43834?
CVE-2021-43834 is a critical-severity vulnerability affecting elabftw elabftw. It was published on December 16, 2021 and has a CVSS 3.1 base score of 9.1 (CRITICAL).
How severe is CVE-2021-43834?
This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-43834?
Check the references section for vendor advisories and patches from elabftw. Update elabftw to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-43834?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-43834 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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