CVE-2026-41406
OpenClaw < 2026.3.31 - Sender Allowlist Bypass via Thread History and Quoted Messages
OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
OpenClaw < 2026.3.31 - Sender Allowlist Bypass via Thread History and Quoted Messages
OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.
- Record
CVE-2026-41406- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-639
- Updated
- 2026-11-02
EUVDEUVD-2026-26113
OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.
- Record
EUVD-2026-26113- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-877v-w3f5-3pcq
OpenClaw: Feishu thread history and quoted messages bypass sender allowlist
Summary
Feishu thread history and quoted messages bypass sender allowlist
Current Maintainer Triage
- Status: open
- Normalized severity: medium
- Assessment: Real in shipped v2026.3.28 Feishu because fetched quoted/root/thread context bypasses sender allowlists, and SECURITY.md does not exempt remote sender-allowlist bypasses.
Affected Packages / Versions
- Package:
openclaw(npm) - Latest published npm version:
2026.3.31 - Vulnerable version range:
<=2026.3.28 - Patched versions:
>= 2026.3.31 - First stable tag containing the fix:
v2026.3.31
Fix Commit(s)
f45e5a6569aab1d58cc6de25b19f1dc4c8779b85— 2026-03-31T19:43:54+09:00
Release Process Note
- The fix is already present in released version
2026.3.31. - This draft looks ready for final maintainer disposition or publication, not additional code-fix work.
OpenClaw thanks @AntAISecurityLab for reporting.
- Record
GHSA-877v-w3f5-3pcq- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-639, CWE-863
- Updated
- 2026-11-02
NVD
OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.
- Record
CVE-2026-41406- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/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
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-639
- Updated
- 2026-11-02
OSV
OpenClaw < 2026.3.31 - Sender Allowlist Bypass via Thread History and Quoted Messages
OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.
- Record
CVE-2026-41406- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-639
- Updated
- 2026-11-02
OSVGHSA-877v-w3f5-3pcq
OpenClaw: Feishu thread history and quoted messages bypass sender allowlist
Summary
Feishu thread history and quoted messages bypass sender allowlist
Current Maintainer Triage
- Status: open
- Normalized severity: medium
- Assessment: Real in shipped v2026.3.28 Feishu because fetched quoted/root/thread context bypasses sender allowlists, and SECURITY.md does not exempt remote sender-allowlist bypasses.
Affected Packages / Versions
- Package:
openclaw(npm) - Latest published npm version:
2026.3.31 - Vulnerable version range:
<=2026.3.28 - Patched versions:
>= 2026.3.31 - First stable tag containing the fix:
v2026.3.31
Fix Commit(s)
f45e5a6569aab1d58cc6de25b19f1dc4c8779b85— 2026-03-31T19:43:54+09:00
Release Process Note
- The fix is already present in released version
2026.3.31. - This draft looks ready for final maintainer disposition or publication, not additional code-fix work.
OpenClaw thanks @AntAISecurityLab for reporting.
- Record
GHSA-877v-w3f5-3pcq- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-639, CWE-863
- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-41406 is a low vulnerability (CVSS 2.3) in Openclaw, published April 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. Fixed in openclaw 2026.3.31.
References
github.com/openclaw/openclaw/security/advisories/GHSA-877v-w3f5-3pcq
vulncheck.com/advisories/openclaw-sender-allowlist-bypass-via-thread-history-and-quoted-messages
nvd.nist.gov/vuln/detail/CVE-2026-41406