Aias00 opened a new issue, #6641:
URL: https://github.com/apache/shenyu/issues/6641
- severity: High
- files:
`shenyu-plugin/shenyu-plugin-mcp-server/src/main/java/org/apache/shenyu/plugin/mcp/server/response/ShenyuMcpResponseDecorator.java:59-79`
- description: `super.writeWith(Flux.from(body).doOnNext(buffer -> { byte[]
bytes = ...; buffer.read(bytes); ... }))` calls `DataBuffer.read(byte[])`,
advancing the reader index to the end, before `super.writeWith` writes the
buffer. `ServerHttpResponseDecorator.writeWith` writes from the current reader
index, so it writes zero bytes — the actual HTTP response body sent downstream
is empty.
- impact: The forwarded HTTP response body is lost/empty; downstream
receives no body while only the captured future sees the content.
- suggested_fix: Capture bytes via `DataBufferUtils.clone(buffer)` or read a
copy without advancing the original buffer; release after writing.
- confidence: Medium
- related_existing: none
---
_Identified during the 2026-08-02 deep re-scan; full list in
[`docs/scan2-2026-08-02/00-consolidated-critical-high.md`](docs/scan2-2026-08-02/00-consolidated-critical-high.md)._
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