CVE-2021-33604 Reflected cross-site scripting in development mode handler in Vaadin 14, 15-19

2021-06-2400:00:00

CWE-172

Vaadin

www.cve.org

2.5 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

4.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

23.5%

JSON

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.

CNA Affected

[
  {
    "product": "Vaadin",
    "vendor": "Vaadin",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "14.0.0",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "14.6.1",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "15.0.0",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "19.0.8",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "flow-server",
    "vendor": "Vaadin",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "2.0.0",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "2.6.1",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "3.0.0",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "6.0.9",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]