CVE-2026-56244 · Symaro Security Advisory

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.

Severity (CVSS)

Base score	7.1
Severity	High
Version	CVSS 4.0
Vector	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
Provided by	CNA

Weaknesses

CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor

Affected products

Vendor	Product	Versions
Capgo	Capgo	0 to <12.128.2; 12.128.2

References

https://github.com/Cap-go/capgo/security/advisories/GHSA-qrrx-x3qf-x87v (vendor-advisory)
https://www.vulncheck.com/advisories/capgo-webhook-signing-secret-disclosure-via-non-admin-api-key (third-party-advisory)

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 25 Jun 2026 10:14 UTC.