The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade katex
to version 0.16.10 or higher.
katex is a Fast math typesetting for the web.
Affected versions of this package are vulnerable to Unchecked Input for Loop Condition when handling \def
or \newcommand
in conjunction with Unicode sub/superscripts. An attacker can cause a near-infinite loop, leading to memory overflow, tying up the main thread, or stack overflow, by exploiting the maxExpand
option which fails to limit macro executions effectively.
Note:
This vulnerability is particularly concerning when rendering untrusted mathematical expressions, as it can be used for an availability attack, rendering the service unusable.
This vulnerability can be mitigated by forbidding inputs containing any of the characters \u208a\u208b\u208c\u208d\u208e\u2080\u2081\u2082\u2083\u2084\u2085\u2086\u2087\u2088\u2089\u2090\u2091\u2095\u1d62\u2c7c\u2096\u2097\u2098\u2099\u2092\u209a\u1d63\u209b\u209c\u1d64\u1d65\u2093\u1d66\u1d67\u1d68\u1d69\u1d6a\u207a\u207b\u207c\u207d\u207e\u2070\u00b9\u00b2\u00b3\u2074\u2075\u2076\u2077\u2078\u2079\u1d43\u1d47\u1d9c\u1d48\u1d49\u1d4d\u02b0\u2071\u02b2\u1d4f\u02e1\u1d50\u207f\u1d52\u1d56\u02b3\u02e2\u1d57\u1d58\u02b7\u02e3\u02b8\u1dbb\u1d5b\u1d5d\u1d5e\u1d5f\u1d60\u1d61
before passing them to KaTeX.