AZL-96605
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-96605.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-96605
- Upstream
- Published
- 2026-08-18T15:16:57Z
- Modified
- 2026-09-17T05:36:01Z
- Summary
- CVE-2026-66046 affecting package expat for versions less than 2.8.3-2
- Details
-
Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c, where processing N specified attributes with non-normalized values triggers an O(N^2) linear scan of elementType->defaultAtts to determine CDATA status. A remote unauthenticated attacker can supply a single well-formed XML document of a few megabytes to an application parsing untrusted XML to cause excessive CPU consumption, resulting in denial of service without requiring authentication, external entity resolution, or non-default parser options.
- References