Vulnerability in Cap-Go Capgo
CVE-2026-56307
Cap-go before 12.128.12 contains a broken cursor pagination vulnerability in the /private/devices endpoint on the Cloudflare/workerd path that allows authenticated attackers to cause duplicate-page loops and make later rows unreachable. Attackers with app.read_devices access can exploit non-advancing cursor filters to trigger infinite pagination loops, prevent dataset traversal, and cause repeated processing in device-management workflows.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (31.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Cap-Go Capgo — versions 0, 12.128.12
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-8p6w-x7jg-v4xq (vendor-advisory)
- www.vulncheck.com/advisories/cap-go-broken-cursor-pagination-in-private-devices… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56307?
- CVE-2026-56307 is a medium-severity vulnerability in Cap-Go Capgo, classified under Always-Incorrect Control Flow Implementation. CVSS score: 4.3/10. Published 2026-06-20.
- How severe is CVE-2026-56307?
- Medium severity. CVSS v3 base score is 4.3 out of 10.