{"id":"CVE-2022-23476","state":"PUBLISHED","title":"Unchecked return value from xmlTextReaderExpand in Nokogiri","description":"Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail 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. Users are advised to 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.","publishedAt":"2022-12-08T03:03:24.572Z","updatedAt":"2025-04-23T16:31:18.189Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["sparklemotion nokogiri"],"affected":[{"vendor":"sparklemotion","product":"nokogiri","versions":[{"version":">= 1.13.8, < 1.13.10","status":"affected"}]}],"references":["https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj","https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b843caee88ce","https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50"],"weaknesses":["CWE-252","CWE-476"],"ingestedAt":"2026-10-29T19:49:40.939Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/23xxx/CVE-2022-23476.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-23476","state":"PUBLISHED","datePublished":"2022-12-08T03:03:24.572Z","dateUpdated":"2025-04-23T16:31:18.189Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","requesterUserId":"c184a3d9-dc98-4c48-a45b-d2d88cf0ac74","dateReserved":"2022-01-19T21:23:53.758Z"},"containers":{"cna":{"title":"Unchecked return value from xmlTextReaderExpand in Nokogiri","descriptions":[{"lang":"en","value":"Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail 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. Users are advised to 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."}],"affected":[{"vendor":"sparklemotion","product":"nokogiri","versions":[{"version":">= 1.13.8, < 1.13.10","status":"affected"}]}],"references":[{"url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj","name":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b843caee88ce","name":"https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b843caee88ce","tags":["x_refsource_MISC"]},{"url":"https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50","name":"https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-252","lang":"en","description":"CWE-252: Unchecked Return Value","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-476","lang":"en","description":"CWE-476: NULL Pointer Dereference","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2022-12-08T03:03:24.572Z"},"source":{"advisory":"GHSA-qv4q-mr5r-qprj","discovery":"UNKNOWN"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj","name":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b843caee88ce","name":"https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b843caee88ce","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50","name":"https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T03:43:46.006Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-23T15:48:08.798198Z","id":"CVE-2022-23476","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-23T16:31:18.189Z"}}]}}}