CVE-2026-56239

HIGHPre-NVD 7.67.6—
EchelonGraph scoreMEDIUM 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
7.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.6Exploit: None knownExposed: 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(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity76% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
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 12× in last 7d / 91× 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.

Showing the most recent 100 of 209 total refreshes for this CVE.

  1. 2026-08-30 20:41 UTCEG score recompute
  2. 2026-08-30 20:41 UTCGHSA enrichment
  3. 2026-08-30 19:17 UTCEPSS rescore
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-27 14:25 UTCEPSS rescore
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-25 03:19 UTCEG score recompute
  10. 2026-08-25 03:19 UTCGHSA enrichment
  11. 2026-08-24 14:18 UTCEG score recompute
  12. 2026-08-24 14:18 UTCGHSA enrichment
  13. 2026-08-24 01:08 UTCGHSA enrichment
  14. 2026-08-23 11:58 UTCEG score recompute
  15. 2026-08-23 11:58 UTCGHSA enrichment
  16. 2026-08-23 00:19 UTCEPSS rescore
  17. 2026-08-22 22:56 UTCEG score recompute
  18. 2026-08-22 22:56 UTCGHSA enrichment
  19. 2026-08-21 23:49 UTCEPSS rescore
  20. 2026-08-21 23:21 UTCGHSA enrichment
  21. 2026-08-21 09:57 UTCEG score recompute
  22. 2026-08-21 09:57 UTCGHSA enrichment
  23. 2026-08-20 22:55 UTCEPSS rescore
  24. 2026-08-20 20:55 UTCGHSA enrichment
  25. 2026-08-20 07:53 UTCEG score recompute
Show 75 more
  1. 2026-08-20 07:53 UTCGHSA enrichment
  2. 2026-08-19 17:04 UTCEPSS rescore
  3. 2026-08-19 05:47 UTCEG score recompute
  4. 2026-08-19 05:47 UTCGHSA enrichment
  5. 2026-08-18 13:48 UTCEPSS rescore
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 09:20 UTCGHSA enrichment
  8. 2026-08-16 20:18 UTCEG score recompute
  9. 2026-08-16 20:18 UTCGHSA enrichment
  10. 2026-08-16 14:56 UTCEPSS rescore
  11. 2026-08-16 05:34 UTCEG score recompute
  12. 2026-08-16 05:34 UTCGHSA enrichment
  13. 2026-08-16 02:14 UTCEPSS rescore
  14. 2026-08-15 16:33 UTCGHSA enrichment
  15. 2026-08-15 03:31 UTCEG score recompute
  16. 2026-08-15 03:31 UTCGHSA enrichment
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 14:29 UTCGHSA enrichment
  19. 2026-08-14 01:27 UTCEG score recompute
  20. 2026-08-14 01:27 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 12:25 UTCGHSA enrichment
  23. 2026-08-12 23:23 UTCEG score recompute
  24. 2026-08-12 23:23 UTCGHSA enrichment
  25. 2026-08-12 13:51 UTCEPSS rescore
  26. 2026-08-12 10:21 UTCGHSA enrichment
  27. 2026-08-11 21:14 UTCEG score recompute
  28. 2026-08-11 21:14 UTCGHSA enrichment
  29. 2026-08-11 08:12 UTCEG score recompute
  30. 2026-08-11 08:12 UTCGHSA enrichment
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-10 19:10 UTCGHSA enrichment
  33. 2026-08-10 06:06 UTCGHSA enrichment
  34. 2026-08-09 17:02 UTCEG score recompute
  35. 2026-08-09 17:02 UTCGHSA enrichment
  36. 2026-08-09 13:46 UTCEPSS rescore
  37. 2026-08-09 04:01 UTCEG score recompute
  38. 2026-08-09 04:01 UTCGHSA enrichment
  39. 2026-08-08 16:37 UTCEPSS rescore
  40. 2026-08-08 14:59 UTCGHSA enrichment
  41. 2026-08-08 01:57 UTCEG score recompute
  42. 2026-08-08 01:57 UTCGHSA enrichment
  43. 2026-08-07 12:55 UTCGHSA enrichment
  44. 2026-08-06 23:53 UTCEG score recompute
  45. 2026-08-06 23:53 UTCGHSA enrichment
  46. 2026-08-06 13:47 UTCEPSS rescore
  47. 2026-08-06 10:52 UTCGHSA enrichment
  48. 2026-08-05 21:49 UTCEG score recompute
  49. 2026-08-05 21:49 UTCGHSA enrichment
  50. 2026-08-05 19:17 UTCEPSS rescore
  51. 2026-08-05 08:48 UTCGHSA enrichment
  52. 2026-08-04 16:55 UTCEG score recompute
  53. 2026-08-04 16:55 UTCGHSA enrichment
  54. 2026-08-04 15:10 UTCEPSS rescore
  55. 2026-08-04 10:39 UTCEPSS rescore
  56. 2026-08-04 03:51 UTCGHSA enrichment
  57. 2026-08-03 14:49 UTCEG score recompute
  58. 2026-08-03 14:49 UTCGHSA enrichment
  59. 2026-08-03 10:36 UTCEPSS rescore
  60. 2026-08-03 01:47 UTCGHSA enrichment
  61. 2026-08-02 12:44 UTCEG score recompute
  62. 2026-08-02 12:44 UTCGHSA enrichment
  63. 2026-08-02 02:27 UTCEPSS rescore
  64. 2026-08-01 23:42 UTCGHSA enrichment
  65. 2026-08-01 10:40 UTCEG score recompute
  66. 2026-08-01 10:40 UTCGHSA enrichment
  67. 2026-08-01 04:16 UTCEPSS rescore
  68. 2026-07-31 21:38 UTCGHSA enrichment
  69. 2026-07-31 08:36 UTCGHSA enrichment
  70. 2026-07-30 19:26 UTCEG score recompute
  71. 2026-07-30 19:26 UTCGHSA enrichment
  72. 2026-07-30 16:28 UTCEPSS rescore
  73. 2026-07-30 03:31 UTCEG score recompute
  74. 2026-07-30 03:31 UTCGHSA enrichment
  75. 2026-07-30 01:30 UTCEPSS rescore

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 0% probability of exploitation in the next 30 days, which ranks it in the top 72.6% of all scored CVEs.
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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