{"id":"CVE-2026-55862","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-55862","generatedAt":"2026-10-27T23:57:00.926Z","title":"Prior to 2.0.0, multiple ixml DOM traversal functions process deeply nested XML with unbounded recursion.","description":"pupnp is an SDK for development of UPnP device and control point applications. Prior to 2.0.0, multiple ixml DOM traversal functions process deeply nested XML with unbounded recursion. The iterative XML parser accepts the document, but ixmlPrintDomTreeRecursive in ixml/src/ixml.c and ixmlNode_getElementsByTagNameRecursive, ixmlNode_getElementsByTagNameNSRecursive, ixmlNode_cloneNodeTreeRecursive, and ixmlNode_isAncestor in ixml/src/node.c recurse over firstChild and nextSibling links. An unauthenticated peer on the local network can supply deeply nested XML through a SOAP request, exhaust a service thread's stack, and crash the UPnP service. This is an incomplete-fix case for CVE-2021-28302 because its remediation converted ixmlNode_free but left these traversal paths recursive. This issue is fixed in 2.0.0.","published":"2026-10-16T16:18:44.000Z","lastModified":"2026-10-23T16:10:20.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-674"],"affected":["pupnp project/pupnp"],"epss":{"score":0.00465,"percentile":0.40016,"date":"2026-10-26","history":[{"date":"2026-10-17","score":0.00378,"percentile":0.30174}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.46%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T16:18:44.000Z","detail":{"score":"6.5","severity":"MEDIUM","publishedAt":"2026-10-16T16:18:44.060Z"},"summary":"New CVE, medium severity (CVSS 6.5)."}],"references":[{"url":"https://github.com/pupnp/pupnp/commit/82ccaec7ab6b1258ea1ac66374d8940712ccd4c4","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/pupnp/pupnp/releases/tag/release-2.0.0","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/pupnp/pupnp/security/advisories/GHSA-25cx-xv8x-j247","tags":["Exploit","Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/pupnp/pupnp/security/advisories/GHSA-25cx-xv8x-j247","tags":["Exploit","Mitigation","Vendor Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-55862","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}