CVE-2026-56331

Capgo before 12.128.2 contains improper error handling in the /private/accept_invitation endpoint that returns HTTP 500 instead of safe 4xx errors when magic_invite_string is invalid. Attackers can trigger this vulnerability using only the public key by submitting malformed magic_invite_string values to cause server errors and leak internal processing details.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/Cap-go/capgo/security/advisories/GHSA-34p8-fh3m-376x
https://www.vulncheck.com/advisories/capgo-improper-error-handling-in-accept-invitation-endpoint-via-invalid-magic-string
https://github.com/Cap-go/capgo/security/advisories/GHSA-34p8-fh3m-376x

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-30 23:17

Updated : 2026-07-01 16:16

NVD link : CVE-2026-56331

Mitre link : CVE-2026-56331

CVE.ORG link : CVE-2026-56331

JSON object : View

Products Affected

No product.

CWE

CWE-209

Generation of Error Message Containing Sensitive Information

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