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CVE-2026-43578

OpenClaw 2026.3.31 < 2026.4.10 - Privilege Escalation via Missed Async Exec Completion Events in Heartbeat Owner Downgrade

9.1 CriticalFix available

OpenClaw versions 2026.3.31 before 2026.4.10 contain a privilege escalation vulnerability where heartbeat owner downgrade detection misses local background async exec completion events. Attackers can exploit this by providing untrusted completion content to leave a run in a more privileged context than intended.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.29%Up 0.2 points since May 7, 2026
90%50%10%1%

What each source reports

CVE List Score used 9.1

OpenClaw 2026.3.31 < 2026.4.10 - Privilege Escalation via Missed Async Exec Completion Events in Heartbeat Owner Downgrade

OpenClaw versions 2026.3.31 before 2026.4.10 contain a privilege escalation vulnerability where heartbeat owner downgrade detection misses local background async exec completion events. Attackers can exploit this by providing untrusted completion content to leave a run in a more privileged context than intended.

Record
CVE-2026-43578
CVSS 4.0
9.1 CriticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-184
Updated
2026-11-02
EUVDEUVD-2026-28168 9.1

OpenClaw versions 2026.3.31 before 2026.4.10 contain a privilege escalation vulnerability where heartbeat owner downgrade detection misses local background async exec completion events. Attackers can exploit this by providing untrusted completion content to leave a run in a more privileged context than intended.

Record
EUVD-2026-28168
CVSS 4.0
9.1 CriticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-g375-h3v6-4873 6.0

OpenClaw: Heartbeat owner downgrade missed local async exec completion events

Summary

Heartbeat owner downgrade missed local async exec completion events.

Affected Packages / Versions

  • Package: openclaw
  • Ecosystem: npm
  • Affected versions: >= 2026.3.31 < 2026.4.10
  • Patched versions: >= 2026.4.10

Impact

Local background exec completion text could be missed by heartbeat owner-downgrade detection, leaving a run in a more privileged context than intended after untrusted completion content.

Technical Details

The fix expands exec-completion detection to local background exec formats and adds targeted tests.

Fix

The issue was fixed in #64376. The first stable tag containing the fix is v2026.4.10, and [email protected] includes the fix.

Fix Commit(s)

  • 19a2e9ddb5a8a494abcba812bb11f51075026a27
  • PR: #64376

Release Process Note

Users should upgrade to openclaw 2026.4.10 or newer. The latest npm release, 2026.4.14, already includes the fix.

Credits

Thanks to @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.

Record
GHSA-g375-h3v6-4873
CVSS 4.0
6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-269
Updated
2026-11-02
GitHub AdvisoriesGHSA-mw7v-rxqg-f85m 9.1

OpenClaw versions 2026.3.31 before 2026.4.10 contain a privilege escalation vulnerability where...

OpenClaw versions 2026.3.31 before 2026.4.10 contain a privilege escalation vulnerability where heartbeat owner downgrade detection misses local background async exec completion events. Attackers can exploit this by providing untrusted completion content to leave a run in a more privileged context than intended.

Record
GHSA-mw7v-rxqg-f85m
CVSS 4.0
9.1 CriticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-184
Updated
2026-11-02
NVD 9.1

OpenClaw versions 2026.3.31 before 2026.4.10 contain a privilege escalation vulnerability where heartbeat owner downgrade detection misses local background async exec completion events. Attackers can exploit this by providing untrusted completion content to leave a run in a more privileged context than intended.

Record
CVE-2026-43578
CVSS 4.0
9.1 CriticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-184
Updated
2026-11-02
OSV 9.1

OpenClaw 2026.3.31 < 2026.4.10 - Privilege Escalation via Missed Async Exec Completion Events in Heartbeat Owner Downgrade

OpenClaw versions 2026.3.31 before 2026.4.10 contain a privilege escalation vulnerability where heartbeat owner downgrade detection misses local background async exec completion events. Attackers can exploit this by providing untrusted completion content to leave a run in a more privileged context than intended.

Record
CVE-2026-43578
CVSS 4.0
9.1 CriticalCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-184
Updated
2026-11-02
OSVGHSA-g375-h3v6-4873 6.0

OpenClaw: Heartbeat owner downgrade missed local async exec completion events

Summary

Heartbeat owner downgrade missed local async exec completion events.

Affected Packages / Versions

  • Package: openclaw
  • Ecosystem: npm
  • Affected versions: >= 2026.3.31 < 2026.4.10
  • Patched versions: >= 2026.4.10

Impact

Local background exec completion text could be missed by heartbeat owner-downgrade detection, leaving a run in a more privileged context than intended after untrusted completion content.

Technical Details

The fix expands exec-completion detection to local background exec formats and adds targeted tests.

Fix

The issue was fixed in #64376. The first stable tag containing the fix is v2026.4.10, and [email protected] includes the fix.

Fix Commit(s)

  • 19a2e9ddb5a8a494abcba812bb11f51075026a27
  • PR: #64376

Release Process Note

Users should upgrade to openclaw 2026.4.10 or newer. The latest npm release, 2026.4.14, already includes the fix.

Credits

Thanks to @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.

Record
GHSA-g375-h3v6-4873
CVSS 4.0
6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-269
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openclaw
npm
 2026.3.31 up to 2026.4.10
2026.4.10

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-43578 is a critical vulnerability (CVSS 9.1) in Openclaw, published April 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. Fixed in openclaw 2026.4.10.

References

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