CVE-2021-3541: Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion)

July 9, 2021 (updated March 1, 2022)

A flaw was found in libxml2. By exploiting an exponential entity expansion attack its possible bypassing all existing protection mechanisms and lead to a denial of service.

References

bugzilla.redhat.com/show_bug.cgi?id=1950515
nvd.nist.gov/vuln/detail/CVE-2021-3541

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