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CVE-2026-35637

OpenClaw < 2026.3.22 - Premature Cite Expansion Before Authorization in Channel and DM

6.9 MediumFix available

OpenClaw before 2026.3.22 performs cite expansion before completing channel and DM authorization checks, allowing cite work and content handling prior to final auth decisions. Attackers can exploit this timing vulnerability to access or manipulate content before proper authorization validation occurs.

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
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.25%Up 0.2 points since Apr 10, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.9

OpenClaw < 2026.3.22 - Premature Cite Expansion Before Authorization in Channel and DM

OpenClaw before 2026.3.22 performs cite expansion before completing channel and DM authorization checks, allowing cite work and content handling prior to final auth decisions. Attackers can exploit this timing vulnerability to access or manipulate content before proper authorization validation occurs.

Record
CVE-2026-35637
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-696
Updated
2026-11-02
EUVDEUVD-2026-21130 6.9

OpenClaw before 2026.3.22 performs cite expansion before completing channel and DM authorization checks, allowing cite work and content handling prior to final auth decisions. Attackers can exploit this timing vulnerability to access or manipulate content before proper authorization validation occurs.

Record
EUVD-2026-21130
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-p6j4-wvmc-vx2h 6.9

Duplicate Advisory: OpenClaw: Tlon cite expansion happens before channel and DM authorization is complete

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-vfg3-pqpq-93m4. This link is maintained to preserve external references.

Original Description

OpenClaw before 2026.3.22 performs cite expansion before completing channel and DM authorization checks, allowing cite work and content handling prior to final auth decisions. Attackers can exploit this timing vulnerability to access or manipulate content before proper authorization validation occurs.

Record
GHSA-p6j4-wvmc-vx2h
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-696
Updated
2026-11-02
GitHub AdvisoriesGHSA-vfg3-pqpq-93m4 5.3

OpenClaw: Tlon cite expansion happens before channel and DM authorization is complete

Summary

Tlon cite expansion happened before channel and DM authorization completed, allowing cite work and content handling before the final auth decision.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Affected: < 2026.3.22
  • Fixed: >= 2026.3.22
  • Latest released tag checked: v2026.3.23-2 (630f1479c44f78484dfa21bb407cbe6f171dac87)
  • Latest published npm version checked: 2026.3.23-2

Fix Commit(s)

  • 3cbf932413e41d1836cb91aed1541a28a3122f93
  • ebee4e2210e1f282a982c7ef2ad79d77a572fc87

Release Status

The fix shipped in v2026.3.22 and remains present in v2026.3.23 and v2026.3.23-2.

Code-Level Confirmation

  • extensions/tlon/src/monitor/index.ts now defers cite expansion until after authorization and preserves explicit empty-allowlist semantics.
  • extensions/tlon/src/monitor/utils.ts and extensions/tlon/src/security.test.ts ship the deferred cite expansion behavior and regressions.

OpenClaw thanks @zpbrent for reporting.

Record
GHSA-vfg3-pqpq-93m4
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-863
Updated
2026-11-02
NVD 6.9

OpenClaw before 2026.3.22 performs cite expansion before completing channel and DM authorization checks, allowing cite work and content handling prior to final auth decisions. Attackers can exploit this timing vulnerability to access or manipulate content before proper authorization validation occurs.

Record
CVE-2026-35637
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-696
Updated
2026-11-02
OSV 6.9

OpenClaw < 2026.3.22 - Premature Cite Expansion Before Authorization in Channel and DM

OpenClaw before 2026.3.22 performs cite expansion before completing channel and DM authorization checks, allowing cite work and content handling prior to final auth decisions. Attackers can exploit this timing vulnerability to access or manipulate content before proper authorization validation occurs.

Record
CVE-2026-35637
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Weakness
CWE-696
Updated
2026-11-02
OSVGHSA-p6j4-wvmc-vx2h 6.9

Duplicate Advisory: OpenClaw: Tlon cite expansion happens before channel and DM authorization is complete

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-vfg3-pqpq-93m4. This link is maintained to preserve external references.

Original Description

OpenClaw before 2026.3.22 performs cite expansion before completing channel and DM authorization checks, allowing cite work and content handling prior to final auth decisions. Attackers can exploit this timing vulnerability to access or manipulate content before proper authorization validation occurs.

Record
GHSA-p6j4-wvmc-vx2h
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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
7.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness
CWE-696
Updated
2026-11-02
OSVGHSA-vfg3-pqpq-93m4 5.3

OpenClaw: Tlon cite expansion happens before channel and DM authorization is complete

Summary

Tlon cite expansion happened before channel and DM authorization completed, allowing cite work and content handling before the final auth decision.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Affected: < 2026.3.22
  • Fixed: >= 2026.3.22
  • Latest released tag checked: v2026.3.23-2 (630f1479c44f78484dfa21bb407cbe6f171dac87)
  • Latest published npm version checked: 2026.3.23-2

Fix Commit(s)

  • 3cbf932413e41d1836cb91aed1541a28a3122f93
  • ebee4e2210e1f282a982c7ef2ad79d77a572fc87

Release Status

The fix shipped in v2026.3.22 and remains present in v2026.3.23 and v2026.3.23-2.

Code-Level Confirmation

  • extensions/tlon/src/monitor/index.ts now defers cite expansion until after authorization and preserves explicit empty-allowlist semantics.
  • extensions/tlon/src/monitor/utils.ts and extensions/tlon/src/security.test.ts ship the deferred cite expansion behavior and regressions.

OpenClaw thanks @zpbrent for reporting.

Record
GHSA-vfg3-pqpq-93m4
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-863
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openclaw
npm
 before 2026.3.22
2026.3.22

History

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

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

In short

CVE-2026-35637 is a medium vulnerability (CVSS 6.9) in Openclaw, published March 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. Fixed in openclaw 2026.3.22.

References

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