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Markdown It

markdown-it

Vendor: Markdown It Project • 5 CVEs

CVEs (5)

CVE
VENDORS
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PUBLISHED
CVSS
1Markdown It Project
1Markdown It
Feb 23, 2026
Feb 12, 2026
5.5 MEDIUM· v4
7.5 HIGH· v3
N/A· v2
Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\*+$/ in the linkify function. An attacker can supply a long s...Show more
Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\*+$/ in the linkify function. An attacker can supply a long sequence of * characters followed by a non-matching character, which triggers excessive backtracking and may lead to a denial-of-service condition.Show less
1Markdown It Project
1Markdown It
Dec 22, 2025
Aug 21, 2025
6.9 MEDIUM· v4
6.1 MEDIUM· v3
N/A· v2
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/renderer...Show more
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). This vulnerability is associated with program files lib/renderer.mjs. This issue affects markdown-it: 14.1.0. NOTE: the Supplier does not consider this issue to be a vulnerability.Show less
1Markdown It Project
1Markdown It
Nov 21, 2024
Dec 27, 2022
N/A· v4
7.5 HIGH· v3
N/A· v2
A vulnerability was found in markdown-it up to 2.x. It has been classified as problematic. Affected is an unknown function of the file lib/common/html_re.js. The manipulation leads to inefficient regular expression compl...Show more
A vulnerability was found in markdown-it up to 2.x. It has been classified as problematic. Affected is an unknown function of the file lib/common/html_re.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 3.0.0 is able to address this issue. The name of the patch is 89c8620157d6e38f9872811620d25138fc9d1b0d. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216852.Show less
1Markdown It Project
1Markdown It
Nov 21, 2024
Jan 10, 2022
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a pa...Show more
markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a patch. There are no known workarounds aside from upgrading.Show less
1Markdown It Project
1Markdown It
May 13, 2026
Jun 7, 2017
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
markdown-it before 4.1.0 does not block data: URLs.