CVE-2026-63305

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM 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: 2%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(medium)
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
2%
EPSS %ILE
83%
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 11× in last 7d / 80× 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.

Showing the most recent 100 of 173 total refreshes for this CVE.

  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 09:37 UTCEPSS rescore
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 00:32 UTCEG score recompute
  5. 2026-09-08 00:32 UTCGHSA enrichment
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-06 13:26 UTCGHSA enrichment
  9. 2026-09-05 20:41 UTCEG score recompute
  10. 2026-09-05 20:41 UTCGHSA enrichment
  11. 2026-09-05 15:31 UTCEPSS rescore
  12. 2026-09-04 05:07 UTCEPSS rescore
  13. 2026-09-02 14:12 UTCEPSS rescore
  14. 2026-09-01 13:54 UTCEPSS rescore
  15. 2026-09-01 04:40 UTCEPSS rescore
  16. 2026-08-31 04:31 UTCEG score recompute
  17. 2026-08-31 04:31 UTCGHSA enrichment
  18. 2026-08-30 19:17 UTCEPSS rescore
  19. 2026-08-30 15:58 UTCGHSA enrichment
  20. 2026-08-30 03:36 UTCEG score recompute
  21. 2026-08-30 03:36 UTCGHSA enrichment
  22. 2026-08-30 01:22 UTCEPSS rescore
  23. 2026-08-28 21:42 UTCEPSS rescore
  24. 2026-08-28 01:51 UTCEG score recompute
  25. 2026-08-28 01:51 UTCGHSA enrichment
Show 75 more
  1. 2026-08-27 14:25 UTCEPSS rescore
  2. 2026-08-27 12:38 UTCGHSA enrichment
  3. 2026-08-27 00:18 UTCEG score recompute
  4. 2026-08-27 00:18 UTCGHSA enrichment
  5. 2026-08-26 14:46 UTCEPSS rescore
  6. 2026-08-26 11:58 UTCGHSA enrichment
  7. 2026-08-25 20:59 UTCEG score recompute
  8. 2026-08-25 20:59 UTCGHSA enrichment
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-25 07:42 UTCGHSA enrichment
  11. 2026-08-24 19:23 UTCEG score recompute
  12. 2026-08-24 19:23 UTCGHSA enrichment
  13. 2026-08-24 03:45 UTCGHSA enrichment
  14. 2026-08-23 14:16 UTCGHSA enrichment
  15. 2026-08-23 01:56 UTCEG score recompute
  16. 2026-08-23 01:56 UTCGHSA enrichment
  17. 2026-08-23 00:19 UTCEPSS rescore
  18. 2026-08-22 13:37 UTCGHSA enrichment
  19. 2026-08-22 01:17 UTCEG score recompute
  20. 2026-08-22 01:17 UTCGHSA enrichment
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-21 12:56 UTCGHSA enrichment
  23. 2026-08-21 00:36 UTCEG score recompute
  24. 2026-08-21 00:36 UTCGHSA enrichment
  25. 2026-08-20 22:55 UTCEPSS rescore
  26. 2026-08-20 12:16 UTCGHSA enrichment
  27. 2026-08-19 23:56 UTCEG score recompute
  28. 2026-08-19 23:56 UTCGHSA enrichment
  29. 2026-08-19 17:04 UTCEPSS rescore
  30. 2026-08-19 08:16 UTCGHSA enrichment
  31. 2026-08-18 19:56 UTCEG score recompute
  32. 2026-08-18 19:56 UTCGHSA enrichment
  33. 2026-08-18 13:48 UTCEPSS rescore
  34. 2026-08-18 02:29 UTCGHSA enrichment
  35. 2026-08-17 14:08 UTCEG score recompute
  36. 2026-08-17 14:08 UTCGHSA enrichment
  37. 2026-08-17 13:47 UTCEPSS rescore
  38. 2026-08-17 01:49 UTCEG score recompute
  39. 2026-08-17 01:49 UTCGHSA enrichment
  40. 2026-08-16 14:56 UTCEPSS rescore
  41. 2026-08-16 13:29 UTCEG score recompute
  42. 2026-08-16 13:29 UTCGHSA enrichment
  43. 2026-08-16 01:09 UTCEG score recompute
  44. 2026-08-16 01:09 UTCGHSA enrichment
  45. 2026-08-15 12:49 UTCEG score recompute
  46. 2026-08-15 12:49 UTCGHSA enrichment
  47. 2026-08-15 01:30 UTCEPSS rescore
  48. 2026-08-15 00:29 UTCGHSA enrichment
  49. 2026-08-14 12:09 UTCGHSA enrichment
  50. 2026-08-13 23:50 UTCEG score recompute
  51. 2026-08-13 23:50 UTCGHSA enrichment
  52. 2026-08-13 22:00 UTCEPSS rescore
  53. 2026-08-13 11:30 UTCGHSA enrichment
  54. 2026-08-12 23:10 UTCEG score recompute
  55. 2026-08-12 23:10 UTCGHSA enrichment
  56. 2026-08-12 13:51 UTCEPSS rescore
  57. 2026-08-12 10:51 UTCGHSA enrichment
  58. 2026-08-11 22:31 UTCEG score recompute
  59. 2026-08-11 22:31 UTCGHSA enrichment
  60. 2026-08-11 10:11 UTCEG score recompute
  61. 2026-08-11 10:11 UTCGHSA enrichment
  62. 2026-08-11 00:00 UTCEPSS rescore
  63. 2026-08-10 21:51 UTCGHSA enrichment
  64. 2026-08-10 09:31 UTCGHSA enrichment
  65. 2026-08-09 21:12 UTCEG score recompute
  66. 2026-08-09 21:12 UTCGHSA enrichment
  67. 2026-08-09 13:47 UTCEPSS rescore
  68. 2026-08-09 08:52 UTCGHSA enrichment
  69. 2026-08-08 20:33 UTCEG score recompute
  70. 2026-08-08 20:33 UTCGHSA enrichment
  71. 2026-08-08 16:37 UTCEPSS rescore
  72. 2026-08-08 08:13 UTCGHSA enrichment
  73. 2026-08-07 19:54 UTCEG score recompute
  74. 2026-08-07 19:54 UTCGHSA enrichment
  75. 2026-08-07 07:34 UTCGHSA enrichment

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 2% probability of exploitation in the next 30 days, which ranks it in the top 16.5% 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.

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