# CVE-2026-126542: WWBN AVideo 6.5 through 29.7.1 Authentication Bypass via Hybridauth Social Login

Status: published. Published: 2026-11-11. Updated: 2026-11-14.

WWBN AVideo 6.5 through 29.7.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to log in as any user via Hybridauth social login display names. Attackers can set their X, Facebook, Yahoo or LinkedIn display name to a victim's username and withhold email, causing login.json.php or oauth2.php to log them in as that account, including administrators, without a password.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/WWBN/AVideo/commit/d34ccf23b37a127a68478d66ac00b450b5788bad

## Affected products and versions

- WWBN / AVideo (WWBN/AVideo): ≥ 6.5; ≤ 29.7.1 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 9.3 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CVSS 4.0: 9.3 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.75% as of 2026-11-13; percentile 55.61%

- SSVC: exploitation poc; automatable yes; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-290

## Exploit evidence

- exploit: https://github.com/WWBN/AVideo/security/advisories/GHSA-9rvm-cfc4-q9g9 (ADP: CISA-ADP)

## References

- https://github.com/WWBN/AVideo/security/advisories/GHSA-9rvm-cfc4-q9g9 (CNA: VulnCheck; vendor-advisory)

- https://github.com/WWBN/AVideo/commit/d34ccf23b37a127a68478d66ac00b450b5788bad (CNA: VulnCheck; patch)

- https://github.com/WWBN/AVideo/blob/v29.7.1/objects/login.json.php#L133-L145 (CNA: VulnCheck; technical-description)

- https://github.com/WWBN/AVideo/blob/v29.7.1/plugin/MobileManager/oauth2.php#L90-L102 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/wwbn-avideo-6.5-through-29.7.1-authentication-bypass-via-hybridauth-social-login (CNA: VulnCheck; third-party-advisory)

- https://github.com/WWBN/AVideo/security/advisories/GHSA-9rvm-cfc4-q9g9 (ADP: CISA-ADP; exploit)

- https://github.com/WWBN/AVideo/blob/v29.7.1/objects/login.json.php#L133-L145 (disclosure@vulncheck.com)

- https://github.com/WWBN/AVideo/blob/v29.7.1/plugin/MobileManager/oauth2.php#L90-L102 (disclosure@vulncheck.com)

- https://github.com/WWBN/AVideo/commit/d34ccf23b37a127a68478d66ac00b450b5788bad (disclosure@vulncheck.com)

- https://github.com/WWBN/AVideo/security/advisories/GHSA-9rvm-cfc4-q9g9 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/wwbn-avideo-6.5-through-29.7.1-authentication-bypass-via-hybridauth-social-login (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-126542; retrieved 2026-11-14; source updated 2026-11-14

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-126542; retrieved 2026-11-11; source updated 2026-11-11

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-126542; retrieved 2026-11-14; source updated Not reported

Revision: 3c5ad0653fa7e6a236adecce28fa976d2a7f6b01415ff1169a1fd4925d97dddf

Canonical: https://y2.dev/cve/CVE-2026-126542

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