AVideo CloneSite Flaws Enable File Deletion and Unauthenticated RCE
WWBN AVideo was found to contain multiple high-severity flaws in its CloneSite plugin that can be abused for destructive attacks and full server compromise. One issue, tracked as CVE-2026-33293, affects versions prior to 26.0 and allows arbitrary file deletion through path traversal in the deleteDump parameter of plugin/CloneSite/cloneServer.json.php. Because the value was passed directly to unlink() without sanitization, an attacker with valid clone credentials could use ../../ sequences to remove arbitrary files such as configuration.php, causing denial of service and potentially weakening other protections.
A second issue, CVE-2026-33478, describes a broader attack chain in AVideo versions up to and including 26.0 that can lead to unauthenticated remote code execution. The clones.json.php endpoint exposed clone secret keys without authentication, which could then be used to trigger a full database dump via cloneServer.json.php; the dump reportedly included admin password hashes stored as MD5, enabling attackers to recover credentials and gain administrative access. From there, an OS command injection flaw in cloneClient.json.php involving rsync command construction could be used to execute arbitrary system commands. The vulnerabilities were mapped to CWE-22, CWE-78, and CWE-284, and fixes were released by WWBN, including a patch referenced in commit c85d076375fab095a14170df7ddb27058134d38c.
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How this story unfolded
4 events from the most recent confirmed update back to the earliest known activity.
CVE-2026-41304 published for AVideo CloneSite command injection RCE
A new CVE, CVE-2026-41304, was published for WWBN AVideo describing a remote code execution flaw in the CloneSite plugin. In version 29.0 and earlier, cloneServer.json.php built and executed a wget shell command from the unsanitized url parameter, and the issue was fixed in commit 473c609fc2defdea8b937b00e86ce88eba1f15bb.
WWBN patches AVideo unauthenticated multi-chain RCE
WWBN provided a patch for the CloneSite multi-chain remote code execution issue in commit c85d076375fab095a14170df7ddb27058134d38c. The vulnerability affected AVideo versions up to and including 26.0 and enabled unauthenticated attackers to reach OS command execution.
GitHub Security Advisories receives AVideo multi-chain RCE report
GitHub Security Advisories received a report describing a multi-step attack in AVideo's CloneSite plugin that could lead to unauthenticated remote code execution through clone key disclosure, database dump access, cracked admin hashes, and command injection.
WWBN fixes arbitrary file deletion flaw in AVideo 26.0
WWBN addressed a path traversal issue in the CloneSite plugin by releasing AVideo version 26.0. The flaw allowed authenticated users with clone credentials to use the deleteDump parameter to delete arbitrary files via unsanitized paths.
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CVE-2026-41304 - WWBN AVideo vulnerable to RCE caused by clonesite plugin
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Open sourceCVE-2026-33478 - AVideo Multi-Chain Attack: Unauthenticated Remote Code Execution via Clone Key Disclosure, Database Dump, and Command Injection
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Open sourceCVE-2026-33293 - AVideo Affected by Arbitrary File Deletion via Path Traversal in CloneSite deleteDump Parameter
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AVideo Flaws Enable Remote Code Execution via Command Injection and Malicious Plugin Upload
WWBN **AVideo** versions up to and including `26.0` are affected by two high-severity flaws that can lead to **remote code execution**. `CVE-2026-33482` is an OS command injection bug in `sanitizeFFmpegCommand()`, which strips some shell metacharacters but fails to remove bash command substitution using `$()`. Because the resulting `ffmpeg` command is later executed in a double-quoted `sh -c` context by `execAsync()`, an attacker able to craft a valid encrypted payload can run arbitrary commands on the standalone encoder server. A separate issue, `CVE-2026-33507`, allows unauthenticated code execution through the plugin import workflow. The `objects/pluginImport.json.php` endpoint permits admin users to upload and install plugin ZIP archives containing executable PHP, but lacks **CSRF** protection; with `session.cookie_samesite = 'None'` on HTTPS connections, an attacker can trick a logged-in administrator into silently importing a malicious plugin and deploying a PHP webshell. Fixes were introduced in commits `25c8ab90269e3a01fb4cf205b40a373487f022e1` and `d1bc1695edd9ad4468a48cea0df6cd943a2635f3`.
Mar 23, 2026
Multiple Critical AVideo Flaws Enable Takeover, Session Hijacking, and SSRF
WWBN **AVideo** was found to contain multiple high-severity vulnerabilities that can let attackers seize control of deployments, hijack user sessions, and access internal network resources. On uninitialized instances running version **25.0 or earlier**, `install/checkConfiguration.php` could be abused without authentication to complete setup, create an administrator account, and write configuration files, enabling full application takeover under **CVE-2026-33038**. Separate insecure defaults in the official Docker deployment path, tracked as **CVE-2026-33037**, left new installations exposed to immediate administrative compromise because the admin password defaulted to **"password"** and database credentials defaulted to `avideo/avideo`, with no forced password change or effective hardening. AVideo also exposed users and infrastructure through web-facing flaws in session handling and URL fetching. Under **CVE-2026-33043**, `/objects/phpsessionid.json.php` disclosed active PHP session IDs to unauthenticated requests, and permissive CORS behavior could allow cross-origin session theft and account takeover. Two SSRF issues affected the unauthenticated `plugin/LiveLinks/proxy.php` endpoint: **CVE-2026-33039** allowed redirect-based bypass of URL safety checks in version **25.0 and earlier**, while **CVE-2026-33480** showed that `isSSRFSafeURL()` could also be bypassed with IPv4-mapped IPv6 addresses, extending exposure through version **26.0** and enabling access to localhost, RFC1918 networks, and cloud metadata services. WWBN issued fixes in **AVideo 26.0** for most of the disclosed flaws, with an additional patch published for the IPv6-based SSRF bypass.
Jun 8, 2026
Unauthenticated OS Command Injection in AVideo via `base64Url` Parameter
A critical, **zero-click unauthenticated OS command injection** vulnerability was disclosed in the open-source video hosting/streaming platform **AVideo**, tracked as **CVE-2026-29058**. The flaw affects versions **prior to 7.0** (including **6.0**) and allows remote attackers to execute arbitrary operating system commands on the server without user interaction or prior privileges, creating a path to **full server compromise**, **data exfiltration** (e.g., configuration secrets, internal keys, credentials), and **service disruption**. The issue stems from `objects/getImage.php`, where attacker-controlled input in the `base64Url` GET parameter is Base64-decoded and incorporated into a double-quoted `ffmpeg` shell command without proper escaping/neutralization of shell metacharacters and command substitution (CWE-78). The vulnerability was reported by security researcher **Arkmarta**, and remediation is available by upgrading to **AVideo 7.0 or later**, which includes the official patch.
Mar 21, 2026