hermes-agent/plugins/platforms/wecom
Teknium 74541beb9c
fix(security): cap WeCom callback body size before pre-auth XML parse (#54615)
The WeCom callback endpoint (internet-facing, 0.0.0.0) parsed untrusted
request bodies before signature verification. defusedxml already guards
the entity-expansion class on main, but there was no cap on raw body
size, so an unauthenticated POST could still force unbounded read work
pre-auth.

Set client_max_size=64KB on the aiohttp app (413 at the framework layer)
plus an explicit length guard in _handle_callback as defense in depth.
WeCom callbacks are small encrypted XML envelopes — media is delivered
out-of-band via MediaId, never inline — so 64KB is ample for legitimate
traffic. Adds tests for oversized (413) and normal-sized (not 413) bodies.

Salvaged from #10192 by @memosr (body-size limit half; defusedxml half
already superseded on main).
2026-06-28 22:35:43 -07:00
..
__init__.py refactor(gateway): migrate slack/dingtalk/whatsapp/matrix/feishu/telegram/wecom/email/sms adapters to bundled plugins 2026-06-20 10:26:45 -07:00
adapter.py fix(telegram): preserve Bot API update queue on watcher reconnect 2026-06-25 21:29:57 -07:00
callback_adapter.py fix(security): cap WeCom callback body size before pre-auth XML parse (#54615) 2026-06-28 22:35:43 -07:00
plugin.yaml refactor(gateway): migrate slack/dingtalk/whatsapp/matrix/feishu/telegram/wecom/email/sms adapters to bundled plugins 2026-06-20 10:26:45 -07:00
wecom_crypto.py refactor(gateway): migrate slack/dingtalk/whatsapp/matrix/feishu/telegram/wecom/email/sms adapters to bundled plugins 2026-06-20 10:26:45 -07:00