OpenClaw < 2026.3.31 - Webhook Replay Detection Bypass via Base64 Signature Re-encoding
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
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| OpenClaw | OpenClaw | unaffected |
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No data.
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| Openclaw | Openclaw |
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| Openclaw | Openclaw |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-37v6-fxx8-xjmx | OpenClaw: Telnyx Webhook Replay Detection Bypass via Base64 Signature Re-encoding |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.330% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | OpenClaw before 2026.3.31 contains a replay detection bypass vulnerability in webhook signature handling that treats Base64 and Base64URL encoded signatures as distinct requests. Attackers can re-encode Telnyx webhook signatures to bypass replay detection while maintaining valid signature verification. | |
| Title | OpenClaw < 2026.3.31 - Webhook Replay Detection Bypass via Base64 Signature Re-encoding | |
| First Time appeared |
Openclaw
Openclaw openclaw |
|
| Weaknesses | CWE-294 | |
| CPEs | cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
Openclaw
Openclaw openclaw |
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| References |
| |
| Metrics |
cvssV3_1
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