CVE-2026-56239

HIGH
MEDIUM Priority: 0.02 BB Relevance: 64/100
Published: 2026-06-21 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
AT: None
VC: Low
VI: High
VA: Low

Description

Capgo before 12.128.2 contains a potential privilege escalation vulnerability in the public.apply_usage_overage SECURITY DEFINER function, which performs sensitive billing operations without enforcing internal authorization checks (no validation of auth.uid(), org membership, or check_min_rights). Because the function runs with the owner's privileges, it bypasses Row Level Security. If EXECUTE permission is available to the authenticated or anon roles (explicitly or via default privileges), an authenticated user could invoke it via Supabase RPC to manipulate billing data for arbitrary organizations, including unauthorized credit depletion and fraudulent overage event insertion.

Affected Software (1)

VendorProductVersion
Capgo Capgo 0 < 12.128.2

Bug Bounty Relevance

64 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

7.2 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.35%
Raw Score 0.003460
Percentile 28.6%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00346
2026-11-12
0.00346
2026-11-10
0.00346
2026-11-09
0.00346
2026-11-08
0.00346

Intelligence Sources

mitre ref →