Vulnerability in Wwbn Avideo
CVE-2026-86729
WWBN AVideo through commit e01e41ecc (no patched version available) exposes get_api_preauthorize in plugin/API/API.php as a second, undocumented login path. Unlike get_api_signIn, which enforces a rate limit of 10 attempts per 5 minutes via checkRateLimit(), get_api_preauthorize performs the same credential check with no throttling for any client, allowing unlimited remote password guessing against arbitrary accounts, including admin. The endpoint also acts as a credential oracle: it returns the message "Invalid credentials" for both correct and incorrect passwords, while the users_id field in the response body discloses the authenticated identity (users_id:1 on success, users_id:0 on failure), and a correct password establishes a session cookie that remains usable for authenticated API requests. Together these issues permit unauthenticated brute-force account takeover.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.9% 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
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-vvqm-mgc5-hhx3 (vendor-advisory)
- www.vulncheck.com/advisories/wwbn-avideo-unrestricted-authentication-attempts-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-86729?
- CVE-2026-86729 is a high-severity vulnerability in Wwbn Avideo, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.4/10. Published 2026-09-08.
- How severe is CVE-2026-86729?
- High severity. CVSS v3 base score is 7.4 out of 10.