mirror of
https://github.com/NousResearch/hermes-agent.git
synced 2026-07-24 16:54:43 +00:00
1d7db1ba17
`SlackAdapter._fetch_thread_context` formats each prior thread message as
`{name}: {msg_text}` and joins them with newlines into the block the call
site prepends *raw* into the model turn (`text = thread_context + text`).
Both fields are attacker-influenceable — any thread participant sets their
own Slack display name and message text — and neither was neutralized, so
an embedded newline let a thread message break out of its line and pose as
a fresh markdown section (a fake "## SYSTEM" / "## Override" heading) inside
the context the model reads when first mentioned mid-thread.
This is the same indirect-prompt-injection vector already closed for the
sibling untrusted sinks: the sender-name prefix
(`neutralize_untrusted_inline_text`), the reply quote, and the relay
channel-context renderer. The Slack thread-context backfill — the default
whenever the bot is mentioned in a thread with no active session — was the
missed sink. (The existing `[unverified]` tagging marks *who* a message is
from; it does nothing about newline structure, so an authorized sender can
inject just as easily.)
Flatten both fields with `neutralize_untrusted_inline_text` before
interpolation. The body uses `max_chars=0` so message text is not truncated
(thread context caps the message *count*, never per-message length); the
display name keeps the default bound. `parent_text` keeps the raw message
(its own reply-context sink neutralizes separately). A well-behaved message
is preserved byte-for-byte.
Adds a regression test covering a hostile display name, a hostile message
body, benign passthrough, and the no-truncation guarantee.
|
||
|---|---|---|
| .. | ||
| browser | ||
| context_engine | ||
| cron_providers | ||
| dashboard_auth | ||
| disk-cleanup | ||
| google_meet | ||
| hermes-achievements | ||
| image_gen | ||
| kanban | ||
| memory | ||
| model-providers | ||
| observability | ||
| platforms | ||
| security-guidance | ||
| spotify | ||
| teams_pipeline | ||
| video_gen | ||
| web | ||
| __init__.py | ||
| plugin_utils.py | ||