OpenClaw < 2026.3.28 - Webhook Replay via Query Parameter Reordering in Plivo V3
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-294.
Summary
OpenClaw before 2026.3.28 contains a webhook replay vulnerability in Plivo V3 signature verification that canonicalizes query ordering for signatures but hashes raw URLs for replay detection. Attackers can reorder query parameters to bypass replay cache detection and trigger duplicate voice-call processing with a captured valid signed webhook.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| OpenClaw | OpenClaw | before 2026.3.28 | 2026.3.28 | Patch available | CNA |
| — | openclaw (npm) | before 2026.3.28 | 2026.3.28 | Patch available | GHSA-8689-gm9g-jgr6 |
- OpenClaw VendorOpenClaw Affected before 2026.3.28 Fixed in 2026.3.28 Patch available CNA
- openclaw (npm) Vendor— Affected before 2026.3.28 Fixed in 2026.3.28 Patch available GHSA-8689-gm9g-jgr6
Remediation
- Fix · CNA OpenClaw (OpenClaw) Fixed in 2026.3.28
- Fix · GHSA-8689-gm9g-jgr6 openclaw (npm) Fixed in 2026.3.28 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
OpenClaw 2026.3.28
6 records Highest priority Priority MEDIUM 1 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2026-30000 OpenClaw < 2026.3.28 - Denial of Service via Unbounded Pre-auth WebSocket UpgradesPriority LOW 38
- TI-2026-29991 OpenClaw < 2026.3.28 - Exec Allowlist Bypass via Unregistered /usr/bin/script WrapperPriority LOW 32
- TI-2026-29981 OpenClaw < 2026.3.28 - Arbitrary Execution Allowlist via Wrapper Carrier ExecutablesPriority LOW 32
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41395
- 2026-10-03 Alias added: GHSA-8689-gm9g-jgr6
References
More Openclaw vulnerabilities
- TI-2026-25309 OpenClaw < 2026.3.28 Media Parsing Path Traversal to Arbitrary File Read CVSS 4.0HIGH 8.7
- TI-2026-20394 Exposure of resource to wrong sphere in OpenClaw CVSS 3.1HIGH 8.8
- TI-2026-27742 OpenClaw < 2026.3.24 - Arbitrary Code Execution via .npmrc in Local Plugin/Hook Installation CVSS 4.0HIGH 8.4
- TI-2026-27766 OpenClaw < 2026.3.24 - Denial of Service via Feishu Webhook Pre-Auth Body Parsing CVSS 4.0MEDIUM 6.9
- TI-2026-07315 OpenClaw bluebubbles Webhook monitor.ts handleBlueBubblesWebhookRequest improper authentication CVSS 4.0MEDIUM 6.9
- TI-2026-17789 OpenClaw < 2026.2.22 - Allowlist Bypass via Command Substitution in system.run CVSS 4.0HIGH 7.5
Sources
- CVE-2026-41395 · CVE Program
- CVE-2026-41395 · NVD
- FIRST EPSS
- GHSA-8689-gm9g-jgr6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences