# CVE-2026-61564: AVideo-Encoder: unauthenticated installer PHP code injection

Status: published. Published: 2026-10-28. Updated: 2026-11-03.

AVideo is a video-sharing Platform. Prior to 8.1.0, the unauthenticated installer endpoint `install/checkConfiguration.php` assembles `videos/configuration.php` by interpolating request parameters, including `webSiteRootURL`, into single-quoted PHP string literals without escaping. An attacker can terminate a literal and inject PHP that executes as the web-server user when the generated, directly requestable file is loaded. Exploitation requires `videos/configuration.php` to be absent, as on every fresh deployment or after the file is removed or moved; an existing file blocks this endpoint. The supplied `systemRootPath` must contain index.php and a connection using `databaseHost`, `databaseUser`, and `databasePass` must succeed, but the attacker can point those parameters to their own database server and needs no target credentials. The write location is also derived from `systemRootPath` without a base-directory constraint. This permits arbitrary command execution, reading and overwriting files owned by the web-server user, persistent PHP code, and control over stored database connection settings. The endpoint additionally interpolates request values into streamer and configuration INSERT statements, creating a secondary SQL-injection sink. This issue is fixed in version 8.1.0.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- WWBN / AVideo-Encoder: < 8.1.0 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 10 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: 0.54% as of 2026-11-02; percentile 45.36%

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

- Weaknesses: CWE-94

## Exploit evidence

- exploit: https://github.com/WWBN/AVideo-Encoder/security/advisories/GHSA-xrj3-cqm8-r992 (ADP: CISA-ADP)

## References

- https://github.com/WWBN/AVideo-Encoder/security/advisories/GHSA-xrj3-cqm8-r992 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/WWBN/AVideo-Encoder/commit/0faaddebd11c087885d25a7e0513745465cad411 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/WWBN/AVideo-Encoder/releases/tag/v8.1.0 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/WWBN/AVideo-Encoder/security/advisories/GHSA-xrj3-cqm8-r992 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-61564; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-61564; retrieved 2026-11-03; source updated Not reported

Revision: a2f3baf7bc8d51876f490736f3d87860626a21079ffbbc13279c74b4d909ddad

Canonical: https://y2.dev/cve/CVE-2026-61564

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