CVE-2026-56300 | Capgo before 12.128.2 contains unauthenticated security defi… | CVSS 7.5 HIGH

Description

Capgo before 12.128.2 contains unauthenticated security definer RPC functions get_user_id and get_org_perm_for_apikey that expose API key validity oracles and user UUID disclosure. Unauthenticated attackers using the public API key can validate leaked keys, enumerate users and apps, and determine permission levels, significantly increasing the actionability of compromised credentials.

Metadata

CVE ID: CVE-2026-56300
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-20 12:49 UTC
Published: 2026-06-30 22:08 UTC
Last updated: 2026-06-30 22:08 UTC
Primary CWE: CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
Vendor / Product: Capgo / Capgo
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

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

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
8.7	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References (2)

GitHub Security Advisory (GHSA-7r6g-whg3-5mm4) https://github.com/Cap-go/capgo/security/advisories/GHSA-7r6g-whg3-5mm4
VulnCheck Advisory: Capgo - Unauthenticated API Key Validity and Permission Oracle via RPC Functions https://www.vulncheck.com/advisories/capgo-unauthenticated-api-key-validity-and-permission-oracle-via-rpc-functions