CVE-2026-29058

CriticalRCE

Published: 06 March 2026

Published

06 March 2026

Modified

10 March 2026

KEV Added

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Patch

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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0213 79.6th percentile

Risk Priority 80 floored blend · peak EPSS

Summary

CVE-2026-29058 is a critical-severity OS Command Injection (CWE-78) vulnerability in Wwbn Avideo-Encoder. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 20.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-29058 is a critical command injection vulnerability (CWE-78) affecting AVideo, an open-source video-sharing platform software. Prior to version 7.0, the vulnerability enables unauthenticated attackers to execute arbitrary operating system commands on the server by injecting shell command substitution into the base64Url GET parameter. The issue carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating high confidentiality, integrity, and availability impacts with network accessibility and no privileges required.

Any unauthenticated remote attacker can exploit this vulnerability over the network with low complexity, without user interaction. Successful exploitation allows arbitrary OS command execution, potentially resulting in full server compromise, data exfiltration such as configuration secrets, internal keys, and credentials, as well as service disruption through denial-of-service actions.

The GitHub security advisory (GHSA-9j26-99jh-v26q) confirms the vulnerability has been addressed in AVideo version 7.0, recommending immediate upgrades to mitigate the risk. No workarounds are specified in available details.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-10016

Vulnerability details

AVideo is a video-sharing Platform software. Prior to version 7.0, an unauthenticated attacker can execute arbitrary OS commands on the server by injecting shell command substitution into the base64Url GET parameter. This can lead to full server compromise, data exfiltration…

(e.g., configuration secrets, internal keys, credentials), and service disruption. This issue has been patched in version 7.0.

CWE(s): CWE-78

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1059.004 Unix Shell Execution

Adversaries may abuse Unix shell commands and scripts for execution.

attack.mitre.org →

Why these techniques?

CVE enables unauthenticated RCE via command injection in public-facing web application (T1190) and facilitates arbitrary Unix shell command execution (T1059.004).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0