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GHSA-39mp-545q-w789

MEDIUMFix: openclaw/openclaw@555b257

GHSA-39mp-545q-w789 is a medium-severity (CVSS 5.4) CWE-862 vulnerability in openclaw. O3 Security confirms whether GHSA-39mp-545q-w789 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

OpenClaw: Non-owner command-authorized sender can change the owner-only `/send` session delivery policy

Also known asCVE-2026-35620
Published
Mar 30, 2026
Updated
Jul 8, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Jul 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.

openclawnpm
3.2Mdownloads / week

Description

Fixed in OpenClaw 2026.3.24, the current shipping release.

Title
Non-owner command-authorized sender can change the owner-only /send session delivery policy

CWE
CWE-285 Improper Authorization

CVSS v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Base score: 5.4 (Medium)

Severity Assessment
Medium. This is a real owner-only authorization bypass, but the demonstrated impact is limited to persistent mutation of the current session’s delivery policy rather than direct code execution, sandbox escape, or cross-host compromise.

Impact
A non-owner sender who is allowed to run commands can invoke /send on|off|inherit and persistently change the current session’s sendPolicy, even though OpenClaw documents /send as owner-only.

That lets a lower-trust participant:

  • disable reply delivery for the current session (/send off), suppressing future replies in that chat;
  • re-enable reply delivery (/send on) after the owner intentionally disabled it;
  • remove the session override (/send inherit).

Affected Component
Verified against the latest published GitHub release tag v2026.3.23 (ccfeecb6887cd97937e33a71877ad512741e82b2), published 2026-03-23T23:15:50Z.

Exact vulnerable path on the shipped tag:

  • src/auto-reply/reply/commands-session.ts:212-239
    • handleSendPolicyCommand(...) checks only params.command.isAuthorizedSender.
    • when true, it mutates params.sessionEntry.sendPolicy and persists the session entry.

Authorization behavior that makes this reachable:

  • src/auto-reply/command-auth.ts:401-407
    • senderIsOwner is computed separately from general command authorization.
  • src/auto-reply/command-auth.ts:420-429
    • command authorization can succeed even when senderIsOwner === false.
  • src/auto-reply/command-auth.owner-default.test.ts:10-47
    • existing coverage confirms a sender can be command-authorized while not treated as owner.

Documented owner-only contract:

  • docs/tools/slash-commands.md:112
    • /send on|off|inherit is documented as owner-only.
  • docs/concepts/session-tool.md:156
    • sendPolicy is documented as settable via sessions.patch or owner-only /send on|off|inherit.

Related privilege model:

  • src/gateway/method-scopes.ts:131-133
    • sessions.patch is admin-scoped, which reinforces that session-delivery-policy mutation is treated as privileged state.

Version history:

  • The vulnerable handler exists in release history going back at least to commit ea018a68ccb92dbc735bc1df9880d5c95c63ca35 (refactor(auto-reply): split reply pipeline).
  • Earliest released affected tag found: v2026.1.14-1
  • Latest released affected tag verified: v2026.3.23

Technical Reproduction

  1. Check out the shipped release tag v2026.3.23.
  2. Configure a channel where:
    • a non-owner sender is allowed to run commands, for example through commands.allowFrom;
    • the owner identity is distinct, for example via commands.ownerAllowFrom.
  3. Start or reuse a session with a live sessionEntry and sessionStore.
  4. Send /send off as the non-owner but command-authorized sender.
  5. Confirm the resolved command context has:
    • isAuthorizedSender === true
    • senderIsOwner === false
  6. Observe that the handler still accepts the command, mutates sessionEntry.sendPolicy, and persists the session entry.

Demonstrated Impact
The vulnerable handler performs a real persistent session-state change:

  • src/auto-reply/reply/commands-session.ts:232-238
    • /send inherit deletes sessionEntry.sendPolicy
    • other modes assign sessionEntry.sendPolicy = sendPolicyCommand.mode
    • the handler then calls persistSessionEntry(params)

The mutation is not gated by owner status, only by general command authorization.

That changes subsequent delivery behavior for the current session, which matches the documented meaning of sendPolicy.

Environment

  • Product: OpenClaw
  • Verified shipped tag: v2026.3.23
  • Shipped tag commit: ccfeecb6887cd97937e33a71877ad512741e82b2
  • Published GitHub release time: 2026-03-23T23:15:50Z
  • Verification date: 2026-03-24

Duplicate Check
Upon inspection there is no preexisting GHSA for /send.

This is distinct from:

  • GHSA-r7vr-gr74-94p8
    • that advisory covered owner-only authorization bypasses for /config and /debug, not /send.

This is the same authorization class, but a different privileged command surface that still lacks the owner check.

In Scope Check
This report is in scope under SECURITY.md because:

  • it does not rely on adversarial operators sharing one gateway host or config;
  • it does not rely on trusted local state tampering;
  • SECURITY.md:151-152 explicitly says non-owner sender status matters for owner-only tools and commands;
  • /send is explicitly documented as owner-only, so this is a direct owner-only authorization bypass, not a complaint about normal shared-agent steering.

This is therefore a concrete authorization flaw against a documented product boundary.

Remediation Advice

  1. Change /send to require owner status, not just command authorization.
  2. Reuse the same owner-only rejection pattern already used by privileged command surfaces such as /config, /debug, and owner-only /plugins writes.
  3. Add regression coverage for the exact case where:
    • a non-owner sender is command-authorized;
    • /send must still be rejected unless senderIsOwner === true.
  4. Verify that the owner can still use /send on|off|inherit normally.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmopenclawall versions2026.3.24

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openclaw. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update openclaw to 2026.3.24 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-39mp-545q-w789 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-39mp-545q-w789 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-39mp-545q-w789. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

> Fixed in OpenClaw 2026.3.24, the current shipping release. **Title** Non-owner command-authorized sender can change the owner-only `/send` session delivery policy **CWE** CWE-285 Improper Authorization **CVSS v3.1** CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Base score: **5.4 (Medium)** **Severity Assessment** Medium. This is a real owner-only authorization bypass, but the demonstrated impact is limited to persistent mutation of the current session’s delivery policy rather than direct code execution, sandbox escape, or cross-host compromise. **Impact** A non-owner sender w
O3 Security · Impact-Aware SCA

Is GHSA-39mp-545q-w789 in your dependencies?

O3 detects GHSA-39mp-545q-w789 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-39mp-545q-w789: openclaw (Medium… | O3 Security