CVE-2026-56300CWE-200

Capgo - Unauthenticated API Key Validity and Permission Oracle via RPC Functions

High · published June 30, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
38.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
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
EPSS
0.00459 · 38.8th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-06-30T22:08Z
EPSS history
Timeline
  • 30 JUN 22:08Z
    Capgo - Unauthenticated API Key Validity and Permission Oracle via RPC Functions
    cvelistv5