CVE-2026-63305

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-16. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
52(Track*)
EG Risk 52/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
69%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 20, 2026

Advisory Details (2)

Auto-updated Jul 16, 2026
Patch 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-php
github 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-6mv5

Vendor 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 25× in last 7d / 41× 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.

  1. 2026-07-30 01:49 UTCEG score recompute
  2. 2026-07-30 01:49 UTCGHSA enrichment
  3. 2026-07-30 01:30 UTCEPSS rescore
  4. 2026-07-30 01:30 UTCEPSS rescore
  5. 2026-07-29 13:30 UTCGHSA enrichment
  6. 2026-07-29 01:10 UTCEG score recompute
  7. 2026-07-29 01:09 UTCGHSA enrichment
  8. 2026-07-28 15:37 UTCEPSS rescore
  9. 2026-07-28 12:47 UTCGHSA enrichment
  10. 2026-07-28 00:26 UTCEG score recompute
  11. 2026-07-28 00:26 UTCGHSA enrichment
  12. 2026-07-27 14:14 UTCEPSS rescore
  13. 2026-07-27 12:06 UTCGHSA enrichment
  14. 2026-07-26 23:47 UTCEG score recompute
  15. 2026-07-26 23:47 UTCGHSA enrichment
  16. 2026-07-26 14:54 UTCEPSS rescore
  17. 2026-07-26 14:54 UTCEPSS rescore
  18. 2026-07-26 11:26 UTCEG score recompute
  19. 2026-07-26 11:26 UTCGHSA enrichment
  20. 2026-07-25 14:18 UTCEPSS rescore
  21. 2026-07-25 14:18 UTCEPSS rescore
  22. 2026-07-24 14:18 UTCEPSS rescore
  23. 2026-07-24 14:18 UTCEPSS rescore
  24. 2026-07-23 14:18 UTCEPSS rescore
  25. 2026-07-23 14:18 UTCEPSS rescore
Show 16 more
  1. 2026-07-23 03:22 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-21 15:25 UTCEPSS rescore
  5. 2026-07-21 15:25 UTCEPSS rescore
  6. 2026-07-20 17:08 UTCEPSS rescore
  7. 2026-07-19 14:31 UTCEPSS rescore
  8. 2026-07-19 02:35 UTCEG score recompute
  9. 2026-07-19 02:35 UTCGHSA enrichment
  10. 2026-07-19 02:29 UTCEPSS rescore
  11. 2026-07-18 10:04 UTCEPSS rescore
  12. 2026-07-17 14:15 UTCEG score recompute
  13. 2026-07-17 14:15 UTCGHSA enrichment
  14. 2026-07-17 01:10 UTCGHSA enrichment
  15. 2026-07-16 12:49 UTCEG score recompute
  16. 2026-07-16 12:48 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

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, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63305 actively exploited?
CVE-2026-63305 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 30.6% of all scored CVEs.
What is the CVSS score of CVE-2026-63305?
CVE-2026-63305 has a CVSS v3 base score of 8.1 (NVD).
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

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