{"id":"AZL-111670","summary":"CVE-2026-78661 affecting package azl-otel-collector 0.127.0-1","details":"When coalescing adjacent text nodes in addText and fosterParent, appending to an existing TextNode's Data via string concatenation (n.Data += text) reallocated and copied the accumulated string on every token. Inputs containing many short text runs separated by ignored end tags (such as \"a\u003c/x\u003e\") caused O(n^2) allocations and byte copies. Accumulate coalesced text in per-node byte slices during parsing and materialize Data strings once at the end of parse.","modified":"2026-10-31T14:17:29.988412693Z","published":"2026-10-27T22:18:05Z","upstream":["CVE-2026-78661"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78661"}],"affected":[{"package":{"name":"azl-otel-collector","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/azl-otel-collector"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.127.0-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-111670.json"}}],"schema_version":"1.9.2"}