Search Results (4 CVEs found)

CVE Vendors Products Updated CVSS v3.1
CVE-2026-118694 1 Python-markdown2 Project 1 Python-markdown2 2026-10-28 7.5 High
python-markdown2 through 2.5.5 contains a denial of service vulnerability that allows remote users to exhaust CPU by submitting Markdown with unclosed inline link destinations. Attackers can submit repeated '[a](' or '![a](' sequences, causing _find_balanced to rescan the remaining document for each link and consume quadratic CPU time.
CVE-2020-11888 1 Python-markdown2 Project 1 Python-markdown2 2024-11-21 6.1 Medium
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 1 Python-markdown2 Project 1 Python-markdown2 2024-11-21 N/A
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 1 Python-markdown2 Project 1 Python-markdown2 2024-11-21 6.1 Medium
python-markdown2 before 1.0.1.14 has multiple cross-site scripting (XSS) issues.