CVE-2026-2741: Zip Slip Path Traversal on Node Unpack
Specially crafted ZIP archives can escape the intended extraction directory during Node.js download and extraction in Vaadin 14.2.0 through 14.14.0, 15.0.0 through 23.6.6, 24.0.0 through 24.9.8, and 25.0.0 through 25.0.2.
Vaadin’s build process can automatically download and extract Node.js if it is not installed locally. If an attacker can intercept or control this download via DNS hijacking, a MITM attack, a compromised mirror, or a supply chain attack, they can serve a malicious archive containing path traversal sequences that write files outside the intended extraction directory.
Users of affected versions should use a globally preinstalled Node.js version compatible with their Vaadin version, or upgrade as follows: 14.2.0-14.14.0 to 14.14.1, 15.0.0-23.6.6 to 23.6.7, 24.0.0-24.9.8 to 24.9.9, and 25.0.0-25.0.2 to 25.0.3 or newer.
Please note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 14, 23, 24, 25 version.
Affected Software
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Frequently Asked Questions
What is the severity of CVE-2026-2741?
CVE-2026-2741 has a medium severity rating due to its potential for path traversal vulnerabilities.
How do I fix CVE-2026-2741?
To fix CVE-2026-2741, upgrade to Vaadin versions 14.14.1, 23.6.7, 24.9.9, or 25.0.3 or later.
What systems are affected by CVE-2026-2741?
CVE-2026-2741 affects Vaadin versions from 14.2.0 to 14.14.0, 23.0.0 to 23.6.6, 24.0.0 to 24.9.8, and 25.0.0 to 25.0.2.
What does CVE-2026-2741 allow an attacker to do?
CVE-2026-2741 allows attackers to exploit specially crafted ZIP files to escape the intended extraction directory.
Is CVE-2026-2741 a remote vulnerability?
Yes, CVE-2026-2741 can be exploited remotely through the malicious use of ZIP file uploads.