CVE-2026-56244 | Capgo before 12.128.2 allows non-admin API keys to read webh… | CVSS 7.1 HIGH

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.

Metadata

CVE ID: CVE-2026-56244
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-19 21:53 UTC
Published: 2026-06-24 11:53 UTC
Last updated: 2026-06-24 12:48 UTC
Primary CWE: CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
Vendor / Product: Capgo / Capgo
Sources: cve.org · NVD

Severity & Metrics

7.1 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
Capgo	Capgo	—	0 < 12.128.2, 12.128.2

Weakness (CWE)

CWE	Source	Description
CWE-200	cna	Exposure of Sensitive Information to an Unauthorized Actor

CVSS scores (2)

Score	Severity	Version	Source	Vector
7.1	HIGH	4.0	cna	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
7.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

References (2)

GitHub Security Advisory (GHSA-qrrx-x3qf-x87v) https://github.com/Cap-go/capgo/security/advisories/GHSA-qrrx-x3qf-x87v
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