Cairn

A2A trusted-peer allowlist fail-open security fix

NousResearch/hermes-agent · cluster 126756

Data as of

Nothing open on GitHub. Fix merged in #130516. Check it covers your case.

The short answer

0open issues
0open PRs
6items grouped
Known?
Yes. 6 related items grouped here, 1 issue already closed.
Fix event
A fix was merged to main in PR #130516. Check it covers your case. No release data is tracked.
Tracker
The maintainers' tracker marks this resolved, deciding PR #130516. That is separate from the fix event.
Still open
Nothing open on GitHub.

A security issue where the A2A trusted-peer allowlist fails open (permits all peers) when no allowlist is configured on non-loopback network bindings. Multiple related fixes address this by enforcing fail-closed behavior in that scenario.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

  • #130516 fix(a2a): refuse peers on a network-exposed A2A bind with no trusted-peer allow-list (#126756, salvage #130310)

    merged to main

    files: contributors/emails/[redacted:email], plugins/platforms/a2a/README.md, plugins/platforms/a2a/adapter.py, plugins/platforms/a2a/security.py, tests/plugins/test_a2a_plugin.py

4 PRs closed without merging

From the close comments: merged via another change 4

  • #126775 fix(a2a): fail closed when a network-exposed adapter has no trusted-peer allowlist · merged via another change → 4fb768f, #130310, #130516
  • #127431 fix(security): fail closed when A2A trusted-peer allowlist is empty (closes #126756) · merged via another change → 4fb768f, #127608, #130516
  • #127608 fix(security): fail closed when A2A trusted-peer allowlist is empty on non-loopback bind · merged via another change → 4fb768f, #130516
  • #130310 fix(a2a): fail closed on non-loopback bind with empty trusted-peers allowlist (#126756) · merged via another change → 4fb768f, #130516
Closed issues · 1
  • Closed#126756[Security] A2A trusted-peer allowlist fails open when no allowlist is configured
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(structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 0.33: 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.

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At a glance

Merged PRs
#130516
Closed issues
1
Attempts
4 PRs closed without merging
Fix link checked
1 Oct 2026

For your agent

The same facts, typed.

cluster/126756.json
cluster/126756.md