CVE-2026-56253 | THREATINT

Description

Capgo before 12.128.2 contains an improper access control vulnerability in the public.get_org_members RPC function that allows unauthenticated attackers to enumerate organization members. Attackers can invoke the endpoint using only the public sb_publishable_* key and an organization UUID to retrieve sensitive member information including email addresses, user IDs, roles, and pending invitations.

PUBLISHED Reserved 2026-06-19 | Published 2026-06-21 | Updated 2026-06-23 | Assigner VulnCheck

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

Improper Access Control

Product status

Default status

unaffected

Any version before 12.128.2

affected

12.128.2 (semver)

unaffected

Credits

Judel777 reporter

References

github.com/.../capgo/security/advisories/GHSA-x34h-gc65-f6g4 exploit

github.com/.../capgo/security/advisories/GHSA-x34h-gc65-f6g4 (GHSA Advisory GHSA-x34h-gc65-f6g4) vendor-advisory

www.vulncheck.com/...mail-disclosure-via-get-org-members-rpc (VulnCheck Advisory: Capgo - Unauthenticated Organization Member Email Disclosure via get_org_members RPC) third-party-advisory

cve.org (CVE-2026-56253)

nvd.nist.gov (CVE-2026-56253)

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