| Package | Affected versions | Patched versions |
|---|---|---|
| nokogiri | ≥ 1.13.8, < 1.13.10 | 1.13.10 |
| nokogiri | = 1.13.8= 1.13.9 |
Nokogiri 1.13.8, 1.13.9 fails to check the return value from xmlTextReaderExpand in the method Nokogiri::XML::Reader#attribute_hash. This can lead to a null pointer exception when invalid markup is being parsed.
For applications using XML::Reader to parse untrusted inputs, this may potentially be a vector for a denial of service attack.
Upgrade to Nokogiri >= 1.13.10.
Users may be able to search their code for calls to either XML::Reader#attributes or XML::Reader#attribute_hash to determine if they are affected.
The Nokogiri maintainers have evaluated this as High Severity 7.5 (CVSS3.1).
This vulnerability was responsibly reported by @davidwilemski.
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