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CVSSv2

CVE-2021-26813

Published: 03/03/2021 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 446
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
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Vulnerability Summary

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.

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markdown2 project markdown2

fedoraproject fedora 32

fedoraproject fedora 33

fedoraproject fedora 34

Vendor Advisories

Debian CVElist Bug Report Logs: python-markdown2: CVE-2021-26813
Debian Bug report logs - #984668 python-markdown2: CVE-2021-26813 Package: src:python-markdown2; Maintainer for src:python-markdown2 is Debian Python Team <team+python@trackerdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Sat, 6 Mar 2021 20:42:02 UTC Severity: important Tags: security, ups ...
Arch Linux Issues:
python-markdown2 >=10118, fixed in 240, 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 ...

References

CWE-1333https://github.com/trentm/python-markdown2/pull/387https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=984668https://nvd.nist.govhttps://security.archlinux.org/CVE-2021-26813
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-3581reflected XSSCVE-2024-26925CVE-2024-27956LFICVE-2024-3607CVE-2024-3107CVE-2024-3295SQL
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