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Capgo CVE-2026-56303

| EUVDEUVD-2026-43171 HIGH
Information Exposure (CWE-200)
2026-07-11 VulnCheck GHSA-25wv-52pf-rghh
PostgreSQL Information Disclosure Capgo
8.7
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.5 HIGH

Unauthenticated network RPC call with low complexity (PR:N/UI:N/AC:L) discloses sensitive key metadata (C:H) with no integrity or availability impact and no scope change.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
Jul 11, 2026 - 15:01 EUVD
Analysis Generated
Jul 11, 2026 - 14:05 vuln.today
CVE Published
Jul 11, 2026 - 13:00 cve.org
HIGH 8.7

DescriptionCVE.org

Capgo before 12.128.2 contains an information disclosure vulnerability in the find_apikey_by_value PostgreSQL function marked SECURITY DEFINER and executable by the anon role. Unauthenticated attackers can call this function via the /rest/v1/rpc/find_apikey_by_value endpoint to retrieve sensitive API key metadata including user_id, mode, org scoping, and expiration details when supplied a valid key value.

AnalysisAI

Unauthenticated API key metadata disclosure in Capgo before 12.128.2 stems from the find_apikey_by_value PostgreSQL function being marked SECURITY DEFINER and granted to the anon role, allowing anyone to call it through the PostgREST endpoint /rest/v1/rpc/find_apikey_by_value. When supplied a valid key value, an attacker retrieves sensitive metadata about that key - user_id, mode, organization scoping, and expiration details - bypassing normal row-level security. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain a valid Capgo API key value
Delivery
Reach /rest/v1/rpc/find_apikey_by_value unauthenticated
Exploit
Invoke SECURITY DEFINER RPC as anon
Execution
Receive key metadata (user_id, mode, org, expiry)
Impact
Scope targeted follow-on attack
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Vulnerability AssessmentAI

Exploitation Exploitation requires the Capgo PostgREST endpoint /rest/v1/rpc/find_apikey_by_value to be network-reachable and the find_apikey_by_value function to retain its default SECURITY DEFINER definition with EXECUTE granted to the anon role (the vulnerable state in versions before 12.128.2). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H) reflects a straightforward, network-reachable, unauthenticated call with high confidentiality impact and no integrity or availability effect, yielding a High score of 8.7. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained a Capgo API key value - through a leaked mobile app bundle, log exposure, or a prior breach - sends an unauthenticated POST to /rest/v1/rpc/find_apikey_by_value with that value and receives the key's user_id, mode, org scope, and expiration. This confirms the key is valid and reveals which organization and privilege mode it grants, letting the attacker prioritize and target follow-on abuse. …
Remediation Vendor-released patch: 12.128.2 - upgrade Capgo to 12.128.2 or later, which corrects the exposure of the find_apikey_by_value RPC. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all Capgo deployments and confirm versions in use; review access logs for suspicious /rest/v1/rpc/find_apikey_by_value requests. …

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CVE-2026-56303 vulnerability details – vuln.today
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