GHSA-62m3-fc7f-jpp8

Suggest an improvement
Source
https://github.com/advisories/GHSA-62m3-fc7f-jpp8
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/03/GHSA-62m3-fc7f-jpp8/GHSA-62m3-fc7f-jpp8.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-62m3-fc7f-jpp8
Aliases
Published
2022-03-26T00:09:58Z
Modified
2024-02-16T08:03:16Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Parsedown Class-Name Injection
Details

Parsedown before 1.7.2, when safe mode is used and HTML markup is disabled, might allow attackers to execute arbitrary JavaScript code if a script (already running on the affected page) executes the contents of any element with a specific class. This occurs because spaces are permitted in code block infostrings, which interferes with the intended behavior of a single class name beginning with the language- substring.

Database specific 
{
    "cwe_ids":  [
        "CWE-79"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2022-03-26T00:09:58Z",
    "nvd_published_at":  null,
    "severity":  "HIGH"
}
References

Affected packages

Packagist / erusev/parsedown

Package

Name
erusev/parsedown
Purl
pkg:composer/erusev/parsedown

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.7.2

Affected versions

0.*
0.1.0
0.1.1
0.1.2
0.1.3
0.1.4
0.1.5
0.2.0
0.2.1
0.3.0
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.4.5
0.4.6
0.4.7
0.4.8
0.5.0
0.6.0
0.7.0
0.7.1
0.7.2
0.7.3
0.7.4
0.7.5
0.7.6
0.7.7
0.8.0
0.8.1
0.8.2
0.8.3
0.9.0
0.9.1
0.9.2
0.9.3
0.9.4
1.*
1.0.0-rc.1
1.0.0-rc.2
1.0.0-rc.3
1.0.0-rc.4
1.0.0-rc.5
1.0.0
1.0.1
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.2.0
1.3.0
1.4.0
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
1.5.0
1.5.1
1.5.2
1.5.3
1.5.4
1.6.0
1.6.1
1.6.2
1.6.3
1.6.4
1.7.0
1.7.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/03/GHSA-62m3-fc7f-jpp8/GHSA-62m3-fc7f-jpp8.json"