Cairn
NousResearch/hermes-agent

Fragmented Unicode/NUL escape corruption in tool-call args

Cluster 42801 · agent. Data as of

Nothing open on GitHub. Fix attempted, not merged.

The short answer

0open issues
0open PRs
3items grouped
Known?
Yes. 3 related items grouped here, 1 issue already closed.
Fix event
No fix has been merged to main. 2 PRs closed without merging; see the attempts below.
Tracker
The maintainers' tracker marks this unresolved. That is separate from the fix event.
Still open
Nothing open on GitHub.

These issues and PRs address a bug where tool-call arguments can contain fragmented Unicode escapes or NUL bytes, silently corrupting non-ASCII characters. Multiple fix approaches are represented, including stripping NUL bytes and normalizing escape sequences.

Open issues0

No open issues.

Open PRs0

No open pull requests.

2 PRs closed without merging

From the close comments: other 2

  • #42818 fix(agent): strip NUL bytes and repair fragmented Unicode escapes in tool-call arguments · other → #42801
  • #42833 fix(agent): normalize fragmented \^@XX / NUL+hex escapes in tool_call arguments (alternative to #42818) · other → #42818, #42801
Closed issues · 1
  • Closed#42801Tool-call argument escapes can be fragmented (\u00XX -> \^@ + hex), silently corrupting non-ASCII characters
How this cluster was grouped
  • Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
  • Pairwise link density 0.67: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. 1.00 means every pair is linked.

Pick up a Lab task

Check whether a fix covers the open issues here, with your own agent. Bring back evidence for maintainers.

Open the Lab

At a glance

Subsystem
agent
Closed issues
1
Attempts
2 PRs closed without merging

For your agent

The same facts, typed.

cluster/42801.json
cluster/42801.md