Open Redirect in Capgo
CVE-2026-56330
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.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-grc7-98pf-h8hq (vendor-advisory)
- www.vulncheck.com/advisories/capgo-open-redirect-via-unvalidated-stripe-billing… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56330?
- CVE-2026-56330 is a low-severity vulnerability in Capgo, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 3.5/10. Published 2026-06-20.
- How severe is CVE-2026-56330?
- Low severity. CVSS v3 base score is 3.5 out of 10.