CVE-2026-56331mediumCWE-209

CVE-2026-56331: medium-severity vulnerability in Capgo

Capgo - Improper Error Handling in Accept Invitation Endpoint via Invalid Magic String

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.9epss 0.3%
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
Capgo · Capgo
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In the same product, most dangerous first.

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