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[email protected]CVE-2021-21610

HistoryJan 13, 2021 - 4:15 p.m.

CVE-2021-21610

2021-01-1316:15:14

CWE-79

[email protected]

web.nvd.nist.gov

126

cve-2021-21610

jenkins

lts

cross-site scripting

xss

vulnerability

nvd

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

6.1 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

33.8%

JSON

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not implement any restrictions for the URL rendering a formatted preview of markup passed as a query parameter, resulting in a reflected cross-site scripting (XSS) vulnerability if the configured markup formatter does not prohibit unsafe elements (JavaScript) in markup.

Affected configurations

NVD

Node

jenkinsjenkinsRange≤2.263.1lts

jenkinsjenkinsRange≤2.274-

CPENameOperatorVersion
jenkins:jenkinsjenkinsle2.263.1
jenkins:jenkinsjenkinsle2.274

CPE	Name	Operator	Version
jenkins:jenkins	jenkins	le	2.263.1
jenkins:jenkins	jenkins	le	2.274

CNA Affected

[
  {
    "product": "Jenkins",
    "vendor": "Jenkins project",
    "versions": [
      {
        "lessThanOrEqual": "2.274",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "LTS 2.263.1",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]