CVE-2021-26813

markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.

Database specific

{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "source": "CPE_STRING",
            "extracted_events": [
                {
                    "introduced": "32"
                },
                {
                    "last_affected": "32"
                },
                {
                    "introduced": "33"
                },
                {
                    "last_affected": "33"
                },
                {
                    "introduced": "34"
                },
                {
                    "last_affected": "34"
                }
            ],
            "vendor_product": "fedoraproject:fedora"
        }
    ]
}

References

Affected packages

Git / github.com/trentm/python-markdown2

Affected ranges

Type

GIT

Repo

https://github.com/trentm/python-markdown2

Events

Introduced

6d11f0f1ef9e112faeaf8028f631d2f825f991a6

Fixed

31491857f247f553c4006b7ef55823deefb9e8e9

Database specific

{
    "cpe": "cpe:2.3:a:markdown2_project:markdown2:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "1.0.1.18"
        },
        {
            "fixed": "2.4.0"
        }
    ]
}

Affected versions

1.*

1.0.1.18

1.0.1.19

1.1.0

1.1.1

1.2.0

1.3.0

1.3.1

1.4.0

1.4.1

1.4.2

2.*

2.0.0

2.0.1

2.1.0

2.2.0

2.2.1

2.2.2

2.2.3

2.3.0

2.3.1

2.3.10

2.3.2

2.3.3

2.3.4

2.3.5

2.3.6

2.3.7

2.3.8

2.3.9

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26813.json"