CVE-2022-40304: Improper Restriction of XML External Entity Reference

November 23, 2022 (updated November 9, 2023)

An issue was discovered in Nogokiri’s vendored libxml2 library. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked.

References

nokogiri.org/CHANGELOG.html
nvd.nist.gov/vuln/detail/CVE-2022-40304

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