Medium severity5.9NVD Advisory· Published Apr 23, 2021· Updated Jun 17, 2026
CVE-2020-36321
CVE-2020-36321
Description
Improper URL validation in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
com.vaadin:flow-serverMaven | >= 3.0.0, < 5.0.0 | 5.0.0 |
com.vaadin:flow-serverMaven | >= 2.0.0, < 2.4.2 | 2.4.2 |
Affected products
5- Range: 2.0.0
Patches
Vulnerability mechanics
References
5- github.com/vaadin/flow/pull/9392nvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-49r2-73m6-pp8fghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-36321ghsaADVISORY
- vaadin.com/security/cve-2020-36321nvdVendor AdvisoryWEB
- github.com/vaadin/flow/security/advisories/GHSA-49r2-73m6-pp8fghsaWEB
News mentions
0No linked articles in our index yet.