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cvelistGitHub_MCVELIST:CVE-2023-22468
HistoryJan 26, 2023 - 8:31 a.m.

CVE-2023-22468 Discourse vulnerable to Cross-site Scripting in local oneboxes

2023-01-2608:31:00
CWE-79
GitHub_M
www.cve.org
discourse
cross-site scripting
csp
vulnerability
patched

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.5 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

21.0%

Discourse is an open source platform for community discussion. Versions prior to 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed), are vulnerable to cross-site Scripting. A maliciously crafted URL can be included in a post to carry out cross-site scripting attacks on sites with disabled or overly permissive CSP (Content Security Policy). Discourse’s default CSP prevents this vulnerability. This vulnerability is patched in versions 2.8.13 (stable), 3.0.0.beta16 (beta) and 3.0.0beta16 (tests-passed). As a workaround, enable and/or restore your site’s CSP to the default one provided with Discourse.

CNA Affected

[
  {
    "vendor": "discourse",
    "product": "discourse",
    "versions": [
      {
        "version": "stable < 2.8.14",
        "status": "affected"
      },
      {
        "version": "beta < 3.0.0.beta16",
        "status": "affected"
      },
      {
        "version": "tests-passed < 3.0.0.beta16",
        "status": "affected"
      }
    ]
  }
]

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.5 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

21.0%

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