Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing
Historical advisory recorded 6 Nov 2026 08:36:20 UTC. Read the latest advisory.
cve-program · CVE-2026-0990
PublishedA flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.
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cve-program · CVE-2026-0990
PublishedLibxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing
A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.
- Source published
- 15 Jan 2026 14:20:06 UTC
- Source modified
- 6 Nov 2026 07:49:46 UTC
- Saved here
- 6 Nov 2026 08:36:20 UTC
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- CVE Program Terms of Use
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CVSS 3.1 · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H