AVideo through 29.0 contains an OS command injection vulnerability in the ffmpeg.json.php endpoint where notifyCode and callback parameters are concatenated into a shell command without escaping. Attackers who can craft a valid encrypted payload can inject arbitrary shell metacharacters into these fields to execute OS commands as the web-server user.
CVE-2026-63305
HIGHPre-NVD 8.18.1
EchelonGraph scoreLOW confidence
This high-severity CVE scores 8.1 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: cna:vulncheck
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: —CVSS: 8.1Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.1
- EG Score
- 8.1(low)
- EPSS
- —
- KEV
- Not listed
Published
July 16, 2026
Last Modified
July 16, 2026
Advisory Details (2)
Auto-updated Jul 16, 2026Patch available. Sources: github.
generic
AVideo through 29.0 OS Command Injection via ffmpeg.json.php | Advisories | VulnCheck
https://www.vulncheck.com/advisories/avideo-through-os-command-injection-via-ffmpeg-json-phpgithub Patch Available
OS command injection in plugin/API/standAlone/ffmpeg.json.php via unescaped notifyCode/callback fields in the execAsync completion hook · Advisory · WWBN/AVideo · GitHub
https://github.com/WWBN/AVideo/security/advisories/GHSA-g9x9-q7qj-6mv5Vendor Advisories for CVE-2026-63305(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 2× in last 7d / 2× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-16 12:49 UTCEG score recompute
- 2026-07-16 12:48 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-78
Frequently asked(4)
What is CVE-2026-63305?
CVE-2026-63305 is a high vulnerability published on July 16, 2026. AVideo through 29.0 contains an OS command injection vulnerability in the ffmpeg.json.php endpoint where notifyCode and callback parameters are concatenated into a shell command without escaping. Attackers who can craft a valid encrypted payload can inject arbitrary shell metacharacters into these…
When was CVE-2026-63305 disclosed?
CVE-2026-63305 was first published in the National Vulnerability Database on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-63305?
CVE-2026-63305 has a CVSS v3 base score of 8.1 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-63305?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63305, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-63305
Is Your Infrastructure Affected by CVE-2026-63305?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.