CVE-2026-56244
Capgo - Webhook Signing Secret Disclosure via Non-Admin API Key
- State
- Published
- Severity
- 7.1 High
- Published
- Jun 24, 2026
- Updated
- Jun 24, 2026
- Reserved
- Jun 19, 2026
Description
Capgo before 12.128.2 allows non-admin API keys to read webhook signing secrets via Supabase REST due to insufficient row-level security policies on the webhooks table. Attackers can retrieve the webhook secret and forge valid X-Capgo-Signature headers to send authenticated webhook events to configured receivers, breaking webhook authenticity and integrity.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N | VulnCheck |
Weaknesses
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Affected Products
| Product | Versions |
|---|---|
CapgoCapgo |
|
References
- GitHub Security Advisory (GHSA-qrrx-x3qf-x87v)vendor-advisory
- VulnCheck Advisory: Capgo - Webhook Signing Secret Disclosure via Non-Admin API Keythird-party-advisory
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