Auth bypass in Cap
CVE-2026-59704
Cap's GET /api/video/ai endpoint fails to validate user ownership or membership before returning private video AI metadata including titles, summaries, and chapters. Authenticated attackers can supply arbitrary video IDs to read sensitive AI-generated content and trigger unauthorized AI generation that consumes the video owner's credits without consent.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (28.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.7% 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 — versions 0
Weakness classification (CWE)
References
- github.com/CapSoftware/Cap/issues/1981 (issue-tracking)
- github.com/CapSoftware/Cap (product)
- github.com/CapSoftware/Cap/commit/8d48642b6e7938af238386383ef1c273be4110dd (patch)
- www.vulncheck.com/advisories/cap-missing-access-control-in-video-ai-metadata-en… (third-party-advisory)
- github.com/CapSoftware/Cap/pull/1926 (issue-tracking, technical-description, third-party-advisory)
Frequently asked questions
- What is CVE-2026-59704?
- CVE-2026-59704 is a high-severity vulnerability in Cap, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-07-07.
- How severe is CVE-2026-59704?
- High severity. CVSS v3 base score is 7.1 out of 10.