CVE-2026-81869

OpenTelemetry-Go versions 1.10.0 through 1.33.0 contain a flaw in the sdk/trace/span.go attribute truncation path. When a string or string-slice attribute contains the valid Unicode replacement character U+FFFD , the safeTruncateValidUTF8 function misidentifies it as invalid UTF-8 and returns the...

CVE-2026-81869 OpenTelemetry-Go: UTF-8 replacement rune bypasses attribute length truncation

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From version 1.10.0 until 1.33.0, the sdk/trace/span.go attribute truncation path can fail to enforce AttributeValueLengthLimit for string and string-slice attributes containing the valid Unicode replacement character U+FFFD...