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…

PriorityP337high7.5CVSS 3.1

AVNACLPRNUINSUCNINAH

EPSS

2.38%

82.0th percentile

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.

Affected

10 ranges

Vendor	Product	Version range	Fixed in
debian	python-markdown2	< python-markdown2 2.3.10-1.1 (bookworm)	python-markdown2 2.3.10-1.1 (bookworm)
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—
markdown2_project	markdown2	>= 1.0.1.18 < 2.4.0	2.4.0
markdown2_project	markdown2	>= 1.0.1.18 < 2.4.0	2.4.0
python-markdown2_project	python-markdown2	>= 0 < 2.3.10-1.1	2.3.10-1.1
python-markdown2_project	python-markdown2	>= 0 < 2.3.10-1.1	2.3.10-1.1
python-markdown2_project	python-markdown2	>= 0 < 2.3.10-1.1	2.3.10-1.1
python-markdown2_project	python-markdown2	>= 0 < 2.3.10-1.1	2.3.10-1.1

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

osv7.5HIGH

vendor_debian7.5HIGH

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