CVE-2026-56239

HIGHPre-NVD 7.67.6—
EchelonGraph scoreHIGH confidence

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-06-21. a secondary CVSS source baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.6Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.6
EG Score
7.6(high)
EPSS
9.9%
KEV
Not listed

Published

June 21, 2026

Last Modified

June 24, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Capgo - Privilege Escalation via SECURITY DEFINER Function apply_usage_overage | Advisories | VulnCheck

https://www.vulncheck.com/advisories/capgo-privilege-escalation-via-security-definer-function-apply-usage-overage
github Patch Available🟡 PoC Available

Potential Privilege Escalation via SECURITY DEFINER function apply_usage_overage allowing unauthorized billing manipulation · Advisory · Cap-go/capgo · GitHub

https://github.com/Cap-go/capgo/security/advisories/GHSA-qq85-vjrq-m75g

Vendor Advisories for CVE-2026-56239(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 34× in last 7d / 79× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 21:46 UTCEG score recompute
  2. 2026-07-06 21:46 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 08:42 UTCEG score recompute
  6. 2026-07-06 08:42 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 19:27 UTCEG score recompute
  10. 2026-07-05 19:27 UTCGHSA enrichment
  11. 2026-07-05 06:25 UTCEG score recompute
  12. 2026-07-05 06:25 UTCGHSA enrichment
  13. 2026-07-05 02:31 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-04 17:20 UTCEG score recompute
  16. 2026-07-04 17:20 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 04:19 UTCEG score recompute
  20. 2026-07-04 04:18 UTCGHSA enrichment
  21. 2026-07-03 14:58 UTCEG score recompute
  22. 2026-07-03 14:58 UTCGHSA enrichment
  23. 2026-07-03 01:54 UTCEG score recompute
  24. 2026-07-03 01:54 UTCGHSA enrichment
  25. 2026-07-02 12:51 UTCEG score recompute
Show 54 more
  1. 2026-07-02 12:51 UTCGHSA enrichment
  2. 2026-07-01 23:49 UTCEG score recompute
  3. 2026-07-01 23:49 UTCGHSA enrichment
  4. 2026-07-01 15:07 UTCEPSS rescore
  5. 2026-07-01 10:47 UTCEG score recompute
  6. 2026-07-01 10:47 UTCGHSA enrichment
  7. 2026-06-30 23:22 UTCEPSS rescore
  8. 2026-06-30 21:45 UTCEG score recompute
  9. 2026-06-30 21:45 UTCGHSA enrichment
  10. 2026-06-30 08:43 UTCEG score recompute
  11. 2026-06-30 08:43 UTCGHSA enrichment
  12. 2026-06-29 19:41 UTCEG score recompute
  13. 2026-06-29 19:41 UTCGHSA enrichment
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-29 06:38 UTCEG score recompute
  17. 2026-06-29 06:38 UTCGHSA enrichment
  18. 2026-06-28 17:36 UTCEG score recompute
  19. 2026-06-28 17:35 UTCGHSA enrichment
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-28 04:30 UTCEG score recompute
  24. 2026-06-28 04:30 UTCGHSA enrichment
  25. 2026-06-27 15:28 UTCEG score recompute
  26. 2026-06-27 15:28 UTCGHSA enrichment
  27. 2026-06-27 03:08 UTCEPSS rescore
  28. 2026-06-27 02:25 UTCEG score recompute
  29. 2026-06-27 02:25 UTCGHSA enrichment
  30. 2026-06-26 13:23 UTCEG score recompute
  31. 2026-06-26 13:23 UTCGHSA enrichment
  32. 2026-06-26 00:21 UTCEG score recompute
  33. 2026-06-26 00:21 UTCGHSA enrichment
  34. 2026-06-25 13:49 UTCEPSS rescore
  35. 2026-06-25 11:13 UTCEG score recompute
  36. 2026-06-25 11:13 UTCGHSA enrichment
  37. 2026-06-24 22:11 UTCEG score recompute
  38. 2026-06-24 22:11 UTCGHSA enrichment
  39. 2026-06-24 14:05 UTCEPSS rescore
  40. 2026-06-24 09:10 UTCEG score recompute
  41. 2026-06-24 09:10 UTCGHSA enrichment
  42. 2026-06-23 21:33 UTCEPSS rescore
  43. 2026-06-23 21:33 UTCEPSS rescore
  44. 2026-06-23 20:08 UTCEG score recompute
  45. 2026-06-23 20:08 UTCGHSA enrichment
  46. 2026-06-23 07:03 UTCEG score recompute
  47. 2026-06-23 07:02 UTCGHSA enrichment
  48. 2026-06-22 19:39 UTCNVD updateCVSS v4 → 7.2
  49. 2026-06-22 17:58 UTCEG score recompute
  50. 2026-06-22 17:57 UTCGHSA enrichment
  51. 2026-06-22 04:44 UTCEG score recompute
  52. 2026-06-22 04:43 UTCGHSA enrichment
  53. 2026-06-21 15:38 UTCEG score recompute
  54. 2026-06-21 15:38 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56239?
CVE-2026-56239 is a high vulnerability published on June 21, 2026. Capgo before 12.128.2 contains a potential privilege escalation vulnerability in the public.applyusageoverage SECURITY DEFINER function, which performs sensitive billing operations without enforcing internal authorization checks (no validation of auth.uid(), org membership, or checkminrights).…
When was CVE-2026-56239 disclosed?
CVE-2026-56239 was first published in the National Vulnerability Database on June 21, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56239 actively exploited?
CVE-2026-56239 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56239?
CVE-2026-56239 has a CVSS v3 base score of 7.6 (NVD).
How do I remediate CVE-2026-56239?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56239, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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