ghsa-5prr-v3j2-97mh
CVSS 6.3 osv_rubygems### Summary `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. Nokogiri 1.19.4 performs the bounds check against the full-width index. ### Severity The Nokogiri maintainers have evaluated this as medium severity. Exploitation requires an application to pass an attacker-controlled integer to `NodeSet#[]`. The primary impact is a controlled crash (denial of service), with potential for memory disclosure on CRuby. On JRuby, Nokogiri is not affected by this vulnerability. ### Mitigation Upgrade to Nokogiri 1.19.4 or later. As a workaround, applications that index a `NodeSet` with externally-supplied integers can validate the index against `node_set.length` before use, or avoid passing untrusted values as an index. ### Credit This issue was responsibly reported by Zheng Yu from depthfirst.com.
- Published
- unknown
- Last Modified
- unknown
CVSS details not available.
No product information available.
No linked vulnerabilities found.
{
"affected": [
{
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-5prr-v3j2-97mh/GHSA-5prr-v3j2-97mh.json"
},
"package": {
"ecosystem": "RubyGems",
"name": "nokogiri",
"purl": "pkg:gem/nokogiri"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.19.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.0.0",
"1.0.1",
"1.0.2",
"1.0.3",
"1.0.4",
"1.0.5",
"1.0.6",
"1.0.7",
"1.1.0",
"1.1.1",
"1.10.0",
"1.10.0.rc1",
"1.10.1",
"1.10.10",
"1.10.2",
"1.10.3",
"1.10.4",
"1.10.5",
"1.10.6",
"1.10.7",
"1.10.8",
"1.10.9",
"1.11.0",
"1.11.0.rc1",
"1.11.0.rc2",
"1.11.0.rc3",
"1.11.0.rc4",
"1.11.1",
"1.11.2",
"1.11.3",
"1.11.4",
"1.11.5",
"1.11.6",
"1.11.7",
"1.12.0",
"1.12.0.rc1",
"1.12.1",
"1.12.2",
"1.12.3",
"1.12.4",
"1.12.5",
"1.13.0",
"1.13.1",
"1.13.10",
"1.13.2",
"1.13.3",
"1.13.4",
"1.13.5",
"1.13.6",
"1.13.7",
"1.13.8",
"1.13.9",
"1.14.0",
"1.14.0.rc1",
"1.14.1",
"1.14.2",
"1.14.3",
"1.14.4",
"1.14.5",
"1.15.0",
"1.15.1",
"1.15.2",
"1.15.3",
"1.15.4",
"1.15.5",
"1.15.6",
"1.15.7",
"1.16.0",
"1.16.0.rc1",
"1.16.1",
"1.16.2",
"1.16.3",
"1.16.4",
"1.16.5",
"1.16.6",
"1.16.7",
"1.16.8",
"1.17.0",
"1.17.1",
"1.17.2",
"1.18.0",
"1.18.0.rc1",
"1.18.1",
"1.18.10",
"1.18.2",
"1.18.3",
"1.18.4",
"1.18.5",
"1.18.6",
"1.18.7",
"1.18.8",
"1.18.9",
"1.19.0",
"1.19.1",
"1.19.2",
"1.19.3",
"1.2.0",
"1.2.1",
"1.2.2",
"1.2.3",
"1.3.0",
"1.3.1",
"1.3.2",
"1.3.3",
"1.4.0",
"1.4.1",
"1.4.2",
"1.4.2.1",
"1.4.3",
"1.4.3.1",
"1.4.4",
"1.4.4.1",
"1.4.4.2",
"1.4.5",
"1.4.6",
"1.4.7",
"1.5.0",
"1.5.0.beta.1",
"1.5.0.beta.2",
"1.5.0.beta.3",
"1.5.0.beta.4",
"1.5.1",
"1.5.1.rc1",
"1.5.10",
"1.5.11",
"1.5.2",
"1.5.3",
"1.5.3.rc2",
"1.5.3.rc3",
"1.5.3.rc4",
"1.5.3.rc5",
"1.5.3.rc6",
"1.5.4",
"1.5.4.rc1",
"1.5.4.rc2",
"1.5.4.rc3",
"1.5.5",
"1.5.5.rc1",
"1.5.5.rc2",
"1.5.5.rc3",
"1.5.6",
"1.5.6.rc1",
"1.5.6.rc2",
"1.5.6.rc3",
"1.5.7",
"1.5.7.rc1",
"1.5.7.rc2",
"1.5.7.rc3",
"1.5.8",
"1.5.9",
"1.6.0",
"1.6.0.rc1",
"1.6.1",
"1.6.2",
"1.6.2.1",
"1.6.2.rc1",
"1.6.2.rc2",
"1.6.2.rc3",
"1.6.3",
"1.6.3.1",
"1.6.3.rc1",
"1.6.3.rc2",
"1.6.3.rc3",
"1.6.4",
"1.6.4.1",
"1.6.5",
"1.6.6.1",
"1.6.6.2",
"1.6.6.3",
"1.6.6.4",
"1.6.7",
"1.6.7.1",
"1.6.7.2",
"1.6.7.rc2",
"1.6.7.rc3",
"1.6.7.rc4",
"1.6.8",
"1.6.8.1",
"1.6.8.rc1",
"1.6.8.rc2",
"1.6.8.rc3",
"1.7.0",
"1.7.0.1",
"1.7.1",
"1.7.2",
"1.8.0",
"1.8.1",
"1.8.2",
"1.8.3",
"1.8.4",
"1.8.5",
"1.9.0",
"1.9.0.rc1",
"1.9.1"
]
}
],
"aliases": [
"CVE-2026-57235"
],
"database_specific": {
"cwe_ids": [
"CWE-125",
"CWE-190"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-19T16:36:42Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "### Summary\n\n`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.\n\nNokogiri 1.19.4 performs the bounds check against the full-width index.\n\n### Severity\n\nThe Nokogiri maintainers have evaluated this as medium severity.\n\nExploitation requires an application to pass an attacker-controlled integer to `NodeSet#[]`. The primary impact is a controlled crash (denial of service), with potential for memory disclosure on CRuby.\n\nOn JRuby, Nokogiri is not affected by this vulnerability.\n\n### Mitigation\n\nUpgrade to Nokogiri 1.19.4 or later.\n\nAs a workaround, applications that index a `NodeSet` with externally-supplied integers can validate the index against `node_set.length` before use, or avoid passing untrusted values as an index.\n\n### Credit\n\nThis issue was responsibly reported by Zheng Yu from depthfirst.com.",
"id": "GHSA-5prr-v3j2-97mh",
"modified": "2026-09-10T03:51:07.875324229Z",
"published": "2026-06-19T16:36:42Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-5prr-v3j2-97mh"
},
{
"type": "PACKAGE",
"url": "https://github.com/sparklemotion/nokogiri"
}
],
"schema_version": "1.9.0",
"severity": [
{
"score": "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",
"type": "CVSS_V4"
}
],
"summary": "Nokogiri: Possible Out-of-Bounds Read in `Nokogiri::XML::NodeSet#[]`"
}