Markdown It
Monthly
Denial of service in linkify-it before 5.0.2 allows remote attackers to exhaust CPU by submitting crafted text containing many mailto: occurrences, each triggering the src_email_name email-name validator in lib/re.mjs to rescan the remaining input, yielding O(n^2) complexity. Any application that runs untrusted user text through linkify-it's .test() or .match() is affected; there is no public exploit identified at time of analysis and the flaw is not in CISA KEV, but the low complexity of the trigger makes availability disruption straightforward.
Markdown-It versions up to 14.1.1 is affected by inefficient regular expression complexity (redos) (CVSS 5.3).
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
markdown-it before 4.1.0 does not block data: URLs. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Denial of service in linkify-it before 5.0.2 allows remote attackers to exhaust CPU by submitting crafted text containing many mailto: occurrences, each triggering the src_email_name email-name validator in lib/re.mjs to rescan the remaining input, yielding O(n^2) complexity. Any application that runs untrusted user text through linkify-it's .test() or .match() is affected; there is no public exploit identified at time of analysis and the flaw is not in CISA KEV, but the low complexity of the trigger makes availability disruption straightforward.
Markdown-It versions up to 14.1.1 is affected by inefficient regular expression complexity (redos) (CVSS 5.3).
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in markdown-it allows Cross-Site Scripting (XSS). Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
markdown-it before 4.1.0 does not block data: URLs. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.