CVE-2026-56330 | THREATINT

Description

Capgo before 12.128.2 contains an open redirect vulnerability in stripe_portal and stripe_checkout endpoints that accept unvalidated callbackUrl, successUrl, and cancelUrl parameters. Authenticated attackers can craft malicious billing URLs to redirect users to attacker-controlled domains for phishing and credential harvesting.

PUBLISHED Reserved 2026-06-20 | Published 2026-06-20 | Updated 2026-06-20 | Assigner VulnCheck

MEDIUM: 4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

LOW: 3.5CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

Problem types

URL Redirection to Untrusted Site ('Open Redirect')

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-grc7-98pf-h8hq (GHSA Advisory GHSA-grc7-98pf-h8hq) vendor-advisory

www.vulncheck.com/...ect-via-unvalidated-stripe-billing-urls (VulnCheck Advisory: Capgo - Open Redirect via Unvalidated Stripe Billing URLs) third-party-advisory

cve.org (CVE-2026-56330)

nvd.nist.gov (CVE-2026-56330)

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