CVE-2026-56244
HIGHCapgo - Webhook Signing Secret Disclosure via Non-Admin API Key
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-qrrx-x3qf-x87v)
https://github.com/Cap-go/capgo/security/advisories/GHSA-qrrx-x3qf-x87v
Third Party Advisory third-party-advisory
VulnCheck Advisory: Capgo - Webhook Signing Secret Disclosure via Non-Admin API Key
https://www.vulncheck.com/advisories/capgo-webhook-signing-secret-disclosure-via-non-admin-api-key
Scores
CVSS v3
7.1
EPSS
0.0019
EPSS Percentile
9.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-200
Status
published
Products (2)
Capgo/Capgo
< 12.128.2
Capgo/Capgo
12.128.2
Published
Jun 24, 2026
Tracked Since
Jun 24, 2026