Low severity · published Jun 24, 2021
CVE-2021-33604
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…
2.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack vector
Local
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flow-server · Vaadin
2.0.0 through 2.6.1; 3.0.0 through 5.0.0; 6.0.0 through 6.0.9 · source: NVD
VA
Vaadin · Vaadin
14.0.0 through 14.6.1; 15.0.0 through 18.0.0; 19.0.0 through 19.0.8 · source: NVD