CVE-2026-56323

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 52% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 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 an information disclosure vulnerability in the /functions/v1/channel_self endpoint that allows unauthenticated attackers to enumerate non-public channel names and determine app existence and subscription status. Remote attackers can send GET requests with arbitrary app_id parameters to disclose internal rollout channels, enumerate valid applications across tenants, and leak billing status without authentication or device binding.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

June 22, 2026

Last Modified

June 23, 2026

Advisory Details (2)

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

Capgo - Unauthenticated Channel Enumeration and App Oracle via GET /channel_self | Advisories | VulnCheck

https://www.vulncheck.com/advisories/capgo-unauthenticated-channel-enumeration-and-app-oracle-via-get-channel-self
github Patch Available🟡 PoC Available

Unauthenticated channel enumeration and app/plan oracle via GET /channel_self · Advisory · Cap-go/capgo · GitHub

https://github.com/Cap-go/capgo/security/advisories/GHSA-469v-6vw5-hxpq

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 37× 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 119 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-56323?
CVE-2026-56323 is a high vulnerability published on June 22, 2026. Capgo before 12.128.2 contains an information disclosure vulnerability in the /functions/v1/channelself endpoint that allows unauthenticated attackers to enumerate non-public channel names and determine app existence and subscription status. Remote attackers can send GET requests with arbitrary…
When was CVE-2026-56323 disclosed?
CVE-2026-56323 was first published in the National Vulnerability Database on June 22, 2026, with the most recent update 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-2026-56323 actively exploited?
CVE-2026-56323 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.4% of all scored CVEs.
What is the CVSS score of CVE-2026-56323?
CVE-2026-56323 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-56323?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56323, 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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