CVE-2023-26487 Vega has cross-site scripting vulnerability in `lassoAppend` function

2023-03-0323:47:28

CWE-79

GitHub_M

www.cve.org

vega

visualization grammar

cross-site scripting

lassoappend

push function

event.view

setimmediate

polyfill

eval-like functionality

security patch

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

42.1%

JSON

Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs.lassoAppend' function accepts 3 arguments and internally invokes pushfunction on the 1st argument specifying array consisting of 2nd and 3rd arguments aspushcall argument. The type of the 1st argument is supposed to be an array, but it's not enforced. This makes it possible to specify any object with apushfunction as the 1st argument,pushfunction can be set to any function that can be access viaevent.view(no all such functions can be exploited due to invalid context or signature, but some can, e.g.console.log). The issue is thatlassoAppenddoesn't enforce proper types of its arguments. This issue opens various XSS vectors, but exact impact and severity depends on the environment (e.g. Core JSsetImmediatepolyfill basically allowseval`-like functionality). This issue was patched in 5.23.0.

CNA Affected

[
  {
    "vendor": "vega",
    "product": "vega",
    "versions": [
      {
        "version": "< 5.23.0",
        "status": "affected"
      }
    ]
  }
]