CVE-2026-56239 (GCVE-0-2026-56239)

Vulnerability from cvelistv5 – Published: 2026-06-21 13:26 – Updated: 2026-06-21 13:26
VLAI
Title
Capgo - Privilege Escalation via SECURITY DEFINER Function apply_usage_overage
Summary
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.
Severity
7.2 (High)
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
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
CWE
  • CWE-269 - Improper Privilege Management
Assigner
References
Impacted products
Vendor Product Version
Capgo Capgo Affected: 0 , < 12.128.2 (semver)
Unaffected: 12.128.2 (semver)
Create a notification for this product.
Date Public
2026-02-26 00:00
Credits
hunt-with-4bh1
Show details on NVD website
To clipboard 

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        }
      ],
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            "Recovery": "NOT_DEFINED",
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            "attackRequirements": "NONE",
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            "exploitMaturity": "NOT_DEFINED",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "url": "https://github.com/Cap-go/capgo/security/advisories/GHSA-qq85-vjrq-m75g"
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    "cveId": "CVE-2026-56239",
    "datePublished": "2026-06-21T13:26:52.134Z",
    "dateReserved": "2026-06-19T21:50:06.625Z",
    "dateUpdated": "2026-06-21T13:26:52.134Z",
    "state": "PUBLISHED"
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.