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CVE-2026-56079

Status: DeferredHigh (7.1)—

Capgo before 12.128.2 contains a cross-tenant authorization bypass vulnerability in PostgREST endpoints that allows org-scoped read API keys to access other tenants' webhook secrets and delivery logs. Attackers can query the webhooks and webhook_deliveries endpoints to exfiltrate HMAC signing secrets and delivery payloads, enabling forged webhook events against victim organizations.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

AV:N, PR:L, UI:N indica acceso remoto con privilegios (API key org-scoped); bypass de autorización multi-tenant permite lectura no autorizada de secretos HMAC y logs. CWE-200 (exposición de información).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account ManagementNetwork SegmentationVulnerability ScanningUser Account ManagementThreat Intelligence ProgramLimit Access to Resource Over Network

Affected technologies (2)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Capgo — CapgoAIPostgrest — PostgrestAI

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-56079",
  "cveTags": [],
  "metrics": {
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          "options": [
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              "automatable": "no"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-06-22T17:44:53.103003Z"
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          "vulnIntegrityImpact": "NONE",
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          "modifiedAttackVector": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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    }
  ],
  "lastModified": "2026-06-22T19:17:22.317",
  "sourceIdentifier": "disclosure@vulncheck.com"
}