CVE Explorer

CVE-2026-57436

Nokogiri is an open source XML and HTML library for the Ruby programming language. Prior to 1.19.4, Nokogiri::XML::Document#root= validated only that the new root was a Nokogiri::XML::Node, allowing a DTD node to be set as the document root. The result is a heap use-after-free during garbage collection or finalization, leading to an invalid memory read or potentially a segfault. This vulnerability is fixed in 1.19.4.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2852ec8c0cff94fa5e1f97ca88947261f9420bd72e633a449c5b08286669f522

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"nokogiri","vendor":"sparklemotion","versions":[{"status":"affected","version":"< 1.19.4"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:0d3c8b15f70cd912981528d3d1fffe73986f84fb57a0bf15ec4b92281a715a11 · sha256:5790bcc851e9f617… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":1.7,"baseSeverity":"LOW","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:0d3c8b15f70cd912981528d3d1fffe73986f84fb57a0bf15ec4b92281a715a11 · sha256:5790bcc851e9f617… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:0d3c8b15f70cd912981528d3d1fffe73986f84fb57a0bf15ec4b92281a715a11 · sha256:5790bcc851e9f617… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-wjv4-x9w8-wm3h","tags":["x_refsource_CONFIRM"],"url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-wjv4-x9w8-wm3h"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0d3c8b15f70cd912981528d3d1fffe73986f84fb57a0bf15ec4b92281a715a11 · sha256:5790bcc851e9f617… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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