Low severity2.5NVD Advisory· Published Jun 24, 2021· Updated Jun 17, 2026
CVE-2021-33604
CVE-2021-33604
Description
URL encoding error in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.6.1 (Vaadin 14.0.0 through 14.6.1), 3.0.0 through 6.0.9 (Vaadin 15.0.0 through 19.0.8) allows local user to execute arbitrary JavaScript code by opening crafted URL in browser.
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:vaadin-bomMaven | >= 14.0.0, < 14.6.2 | 14.6.2 |
com.vaadin:vaadin-bomMaven | >= 15.0.0, < 19.0.9 | 19.0.9 |
Affected products
5cpe:2.3:a:vaadin:flow-server:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:vaadin:flow-server:*:*:*:*:*:*:*:*range: >=2.0.0,<=2.6.1
- (no CPE)range: 2.0.0
Patches
Vulnerability mechanics
References
5- github.com/vaadin/flow/pull/11099nvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-c99r-67x4-whj6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-33604ghsaADVISORY
- vaadin.com/security/cve-2021-33604nvdVendor AdvisoryWEB
- github.com/vaadin/platform/security/advisories/GHSA-c99r-67x4-whj6ghsaWEB
News mentions
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