CVE-2026-56243

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-23. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: 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 security control bypass vulnerability where the PostgREST/RLS plane accepts plaintext API keys through the capgkey header despite enforce_hashed_api_keys being enabled. Attackers can bypass org-level hashed-key enforcement by sending plaintext API keys directly to the PostgREST/RLS plane to access protected resources.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
19.4%
KEV
Not listed

Published

June 23, 2026

Last Modified

June 23, 2026

Advisory Details (2)

Auto-updated Jun 23, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Capgo - Hashed API Key Enforcement Bypass via PostgREST/RLS Plane | Advisories | VulnCheck

https://www.vulncheck.com/advisories/capgo-hashed-api-key-enforcement-bypass-via-postgrest-rls-plane
github Patch Available🟡 PoC Available

Enforce_hashed_api_keys can be bypassed on the PostgREST/RLS plane via plaintext capgkey authentication · Advisory · Cap-go/capgo · GitHub

https://github.com/Cap-go/capgo/security/advisories/GHSA-6g74-8cpq-g2c8

Vendor Advisories for CVE-2026-56243(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 10× in last 7d / 95× 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. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 03:20 UTCEG score recompute
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-21 15:25 UTCEPSS rescore
  5. 2026-07-20 17:08 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-19 14:31 UTCEPSS rescore
  8. 2026-07-19 02:29 UTCEPSS rescore
  9. 2026-07-18 10:04 UTCEPSS rescore
  10. 2026-07-17 04:59 UTCGHSA enrichment
  11. 2026-07-16 18:00 UTCGHSA enrichment
  12. 2026-07-16 17:03 UTCEPSS rescore
  13. 2026-07-16 04:43 UTCGHSA enrichment
  14. 2026-07-15 17:44 UTCGHSA enrichment
  15. 2026-07-15 16:57 UTCEPSS rescore
  16. 2026-07-15 16:57 UTCEPSS rescore
  17. 2026-07-15 06:30 UTCGHSA enrichment
  18. 2026-07-15 02:00 UTCEPSS rescore
  19. 2026-07-15 02:00 UTCEPSS rescore
  20. 2026-07-14 19:31 UTCGHSA enrichment
  21. 2026-07-14 08:32 UTCGHSA enrichment
  22. 2026-07-13 22:31 UTCEPSS rescore
  23. 2026-07-13 21:22 UTCGHSA enrichment
  24. 2026-07-13 10:22 UTCGHSA enrichment
  25. 2026-07-13 06:13 UTCEPSS rescore
Show 72 more
  1. 2026-07-13 06:13 UTCEPSS rescore
  2. 2026-07-12 23:23 UTCGHSA enrichment
  3. 2026-07-12 12:24 UTCGHSA enrichment
  4. 2026-07-12 05:46 UTCEPSS rescore
  5. 2026-07-12 01:25 UTCGHSA enrichment
  6. 2026-07-11 14:26 UTCGHSA enrichment
  7. 2026-07-11 08:27 UTCEPSS rescore
  8. 2026-07-11 08:27 UTCEPSS rescore
  9. 2026-07-11 03:23 UTCGHSA enrichment
  10. 2026-07-10 16:25 UTCGHSA enrichment
  11. 2026-07-10 05:26 UTCGHSA enrichment
  12. 2026-07-09 19:10 UTCEPSS rescore
  13. 2026-07-09 19:10 UTCEPSS rescore
  14. 2026-07-09 18:26 UTCGHSA enrichment
  15. 2026-07-09 07:27 UTCGHSA enrichment
  16. 2026-07-08 20:28 UTCGHSA enrichment
  17. 2026-07-08 15:16 UTCEPSS rescore
  18. 2026-07-08 15:16 UTCEPSS rescore
  19. 2026-07-08 09:29 UTCGHSA enrichment
  20. 2026-07-07 22:30 UTCGHSA enrichment
  21. 2026-07-07 13:46 UTCEPSS rescore
  22. 2026-07-07 13:46 UTCEPSS rescore
  23. 2026-07-07 11:32 UTCGHSA enrichment
  24. 2026-07-07 00:32 UTCGHSA enrichment
  25. 2026-07-06 16:27 UTCEPSS rescore
  26. 2026-07-06 16:27 UTCEPSS rescore
  27. 2026-07-06 13:32 UTCGHSA enrichment
  28. 2026-07-06 02:23 UTCEPSS rescore
  29. 2026-07-06 02:23 UTCEPSS rescore
  30. 2026-07-06 01:56 UTCGHSA enrichment
  31. 2026-07-05 14:58 UTCGHSA enrichment
  32. 2026-07-05 04:00 UTCGHSA enrichment
  33. 2026-07-05 02:31 UTCEPSS rescore
  34. 2026-07-05 02:30 UTCEPSS rescore
  35. 2026-07-04 16:58 UTCGHSA enrichment
  36. 2026-07-04 06:31 UTCEPSS rescore
  37. 2026-07-04 06:31 UTCEPSS rescore
  38. 2026-07-04 05:58 UTCGHSA enrichment
  39. 2026-07-03 18:53 UTCGHSA enrichment
  40. 2026-07-03 07:54 UTCGHSA enrichment
  41. 2026-07-02 20:54 UTCGHSA enrichment
  42. 2026-07-02 09:56 UTCGHSA enrichment
  43. 2026-07-01 22:57 UTCGHSA enrichment
  44. 2026-07-01 15:07 UTCEPSS rescore
  45. 2026-07-01 11:59 UTCGHSA enrichment
  46. 2026-07-01 01:01 UTCGHSA enrichment
  47. 2026-06-30 23:22 UTCEPSS rescore
  48. 2026-06-30 14:02 UTCGHSA enrichment
  49. 2026-06-30 03:02 UTCGHSA enrichment
  50. 2026-06-29 16:02 UTCGHSA enrichment
  51. 2026-06-29 14:06 UTCEPSS rescore
  52. 2026-06-29 14:06 UTCEPSS rescore
  53. 2026-06-29 05:02 UTCGHSA enrichment
  54. 2026-06-28 18:01 UTCGHSA enrichment
  55. 2026-06-28 14:07 UTCEPSS rescore
  56. 2026-06-28 07:02 UTCGHSA enrichment
  57. 2026-06-28 04:56 UTCEPSS rescore
  58. 2026-06-28 04:56 UTCEPSS rescore
  59. 2026-06-27 20:03 UTCGHSA enrichment
  60. 2026-06-27 09:03 UTCGHSA enrichment
  61. 2026-06-27 03:08 UTCEPSS rescore
  62. 2026-06-26 22:04 UTCGHSA enrichment
  63. 2026-06-26 11:06 UTCGHSA enrichment
  64. 2026-06-25 19:39 UTCGHSA enrichment
  65. 2026-06-25 13:49 UTCEPSS rescore
  66. 2026-06-25 08:40 UTCGHSA enrichment
  67. 2026-06-24 21:41 UTCGHSA enrichment
  68. 2026-06-24 14:05 UTCEPSS rescore
  69. 2026-06-24 10:43 UTCGHSA enrichment
  70. 2026-06-23 23:41 UTCGHSA enrichment
  71. 2026-06-23 12:42 UTCEG score recompute
  72. 2026-06-23 12:40 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56243?
CVE-2026-56243 is a high vulnerability published on June 23, 2026. Capgo before 12.128.2 contains a security control bypass vulnerability where the PostgREST/RLS plane accepts plaintext API keys through the capgkey header despite enforcehashedapi_keys being enabled. Attackers can bypass org-level hashed-key enforcement by sending plaintext API keys directly to the…
When was CVE-2026-56243 disclosed?
CVE-2026-56243 was first published in the National Vulnerability Database on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56243 actively exploited?
CVE-2026-56243 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56243?
CVE-2026-56243 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-56243?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56243, 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.

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