CVE-2026-56331 · Symaro Security Advisory

Description

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.

Severity (CVSS)

Base score	6.9
Severity	Medium
Version	CVSS 4.0
Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Provided by	CNA

Weaknesses

CWE-209 — Generation of Error Message Containing Sensitive Information

Affected products

Vendor	Product	Versions
Capgo	Capgo	0 to <12.128.2; 12.128.2

References

https://github.com/Cap-go/capgo/security/advisories/GHSA-34p8-fh3m-376x (vendor-advisory)
https://www.vulncheck.com/advisories/capgo-improper-error-handling-in-accept-invitation-endpoint-via-invalid-magic-string (third-party-advisory)

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 01 Jul 2026 07:05 UTC.