Security readout for executives and security teams
Plain-English summary
AVideo through 29.0 has a critical server-side command injection issue. A successful attacker could run operating-system commands as the web-server user, which can lead to data access, service disruption, or deeper compromise. The provided sources do not show confirmed active exploitation.
Executive priority
Treat this as a critical priority for any exposed AVideo environment. The business risk is remote command execution on the server, but current evidence does not confirm active exploitation or a named patch.
Technical view
The flaw is CWE-78 in plugin/API/standAlone/functions.php. listFFmpegProcesses() places unsanitized keyword parameters inside a single-quoted grep context without escaping. Exploitation requires crafting a valid encrypted codeToExec payload, reflected by CVSS 4.0: AV:N/AC:H/AT:P/PR:N/UI:N with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to organizations running WWBN AVideo through 29.0, especially deployments where the affected plugin/API standalone path is reachable. The source bundle does not identify specific hosted services, distributions, or fixed versions.
Exploitation context
The CVE is not listed as KEV in the provided bundle. Sources describe a path to arbitrary OS command execution, but with high complexity and a prerequisite valid encrypted payload. Treat internet-facing AVideo deployments as urgent until vendor guidance is confirmed.
Researcher notes
The strongest evidence is the CVE description, GitHub advisory, and VulnCheck advisory. Key uncertainty is remediation status: the bundle names affected versions through 29.0 but does not provide a confirmed fixed release or mitigation beyond vendor guidance.
Mitigation direction
- Inventory all AVideo deployments and confirm exact installed versions.
- Review the GitHub vendor advisory for fixed-version or configuration guidance.
- Upgrade or apply vendor-provided fixes as soon as they are available.
- Restrict external access to affected AVideo API paths where operationally possible.
- Monitor web-server logs for unusual standalone API activity.
Validation and detection
- Confirm whether any deployment runs AVideo 29.0 or earlier.
- Check whether plugin/API/standAlone/functions.php is present and reachable.
- Review logs around codeToExec-related requests without replaying payloads.
- Verify vendor advisory status before declaring remediation complete.
- Document compensating controls if a vendor fix is unavailable.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-63304 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.2 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H2.25.9VulnCheckVulnerability scoring details
Base CVSS 4.0 score
9.2CriticalVector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- GitHub Security Advisory (GHSA-j44m-77cc-p3cc)CVE reference, VulnCheck · vendor-advisory
- VulnCheck Advisory: AVideo through 29.0 OS Command Injection via listFFmpegProcessesCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.