Python-Markdown2 Project Python-Markdown2 vulnerabilities

CVE-2021-26813 [HIGH] CVE-2021-26813: markdown2 >=1 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.

CVE-2020-11888 [MEDIUM] CWE-79 CVE-2020-11888: python-markdown2 through 2.3.8 allows XSS because element names are mishandled unless a \w+ match su python-markdown2 through 2.3.8 allows XSS because element names are mishandled unless a \w+ match succeeds. For example, an attack might use elementname@ or elementname- with an onclick attribute.

CVE-2018-5773 [MEDIUM] CWE-79 CVE-2018-5773: An issue was discovered in markdown2 (aka python-markdown2) through 2.3.5. The safe_mode feature, wh An issue was discovered in markdown2 (aka python-markdown2) through 2.3.5. The safe_mode feature, which is supposed to sanitize user input against XSS, is flawed and does not escape the input properly. With a crafted payload, XSS can be triggered, as demonstrated by omitting the final '>' character from an IMG tag.

CVE-2009-3724 [MEDIUM] CWE-79 CVE-2009-3724: python-markdown2 before 1.0.1.14 has multiple cross-site scripting (XSS) issues. python-markdown2 before 1.0.1.14 has multiple cross-site scripting (XSS) issues.