Description
Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::NodeSet#[] (and its alias #slice) checked the requested index against the node set's bounds using a 32-bit-truncated copy of the index. A large negative index could pass the check and then be used at full width, reading outside the node set's storage. On CRuby this is an out-of-bounds read that typically crashes the process; on JRuby it is not memory-unsafe but returns an incorrect node. This vulnerability is fixed in 1.19.4.
Severity (CVSS)
| Base score | 6.3 |
|---|---|
| Severity | Medium |
| Version | CVSS 4.0 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N |
| Provided by | CNA |
Weaknesses
- CWE-125 — CWE-125: Out-of-bounds Read
- CWE-190 — CWE-190: Integer Overflow or Wraparound
Affected products
| Vendor | Product | Versions |
|---|---|---|
| sparklemotion | nokogiri | < 1.19.4 |
References
- https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-5prr-v3j2-97mh (x_refsource_CONFIRM)
Generated from the official CVE List on 26 Jun 2026 07:05 UTC.