{"id":"CVE-2026-32327","state":"PUBLISHED","title":"Apache Portable Runtime Utility: apr-util XML stack recursion crash","description":"A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which parses XML from untrusted sources and uses the apr_xml_quote_elem() function.\n\nUsers are recommended to upgrade to version 1.6.4, which fixes this issue.","publishedAt":"2026-08-06T14:32:43.526Z","updatedAt":"2026-08-06T21:56:07.488Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache Portable Runtime Utility"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Portable Runtime Utility","packageName":"APR-util","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.6.3","versionType":"semver"}]}],"references":["https://lists.apache.org/thread/hq27vj8yfno9tkwv0fpj6jksfzgxvth1","http://www.openwall.com/lists/oss-security/2026/08/06/9"],"weaknesses":["CWE-674"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/32xxx/CVE-2026-32327.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-32327","state":"PUBLISHED","datePublished":"2026-08-06T14:32:43.526Z","dateUpdated":"2026-08-06T21:56:07.488Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-03-12T08:57:52.096Z"},"containers":{"cna":{"title":"Apache Portable Runtime Utility: apr-util XML stack recursion crash","descriptions":[{"lang":"en","value":"A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which parses XML from untrusted sources and uses the apr_xml_quote_elem() function.\n\nUsers are recommended to upgrade to version 1.6.4, which fixes this issue."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Portable Runtime Utility","packageName":"APR-util","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.6.3","versionType":"semver"}]}],"references":[{"url":"https://lists.apache.org/thread/hq27vj8yfno9tkwv0fpj6jksfzgxvth1","tags":["vendor-advisory"]}],"metrics":[{"other":{"content":{"text":"moderate"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-674","description":"CWE-674 Uncontrolled Recursion","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-08-06T14:32:43.526Z"},"credits":[{"lang":"en","type":"finder","value":"Younghyo Cho @ CISLab, SeoulTech"},{"lang":"en","type":"finder","value":"4ra1n, pyn3rd and unam4"}],"source":{"discovery":"EXTERNAL"},"timeline":[{"lang":"en","time":"2026-03-07T07:11:00.000Z","value":"Report received"},{"lang":"en","time":"2026-08-06T12:00:00.000Z","value":"fixed in 1.6.x by r1936815"},{"lang":"en","time":"2026-08-06T12:58:00.000Z","value":"1.6.4 released"}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-06T17:46:05.943190Z","id":"CVE-2026-32327","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":"2026-08-06T17:46:13.272Z"}},{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/08/06/9"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-08-06T21:56:07.488Z"}}]}}}