CVE-2026-72748

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory published 2026-08-11. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: Elevated riskExposed: 0

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

AVideo contains an unauthenticated arbitrary file write vulnerability in the aVideoEncoderChunk.json.php endpoint that allows remote attackers to write up to 4 GB of arbitrary content to the server filesystem via HTTP PUT requests without authentication. Attackers can exhaust disk space causing denial of service, poison the video encoding pipeline, or chain this with local file inclusion to achieve remote code execution.

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
72(Attend)
EG Risk 72/100SSVC: Attend

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
Severity91% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 11, 2026

Advisory Details (3)

Auto-updated Aug 11, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

AVideo Unauthenticated Arbitrary File Write via aVideoEncoderChunk.json.php | Advisories | VulnCheck

https://www.vulncheck.com/advisories/avideo-unauthenticated-arbitrary-file-write-via-avideoencoderchunk-json-php
github_commit

commit 1b55a9b3c491 (WWBN/AVideo)

Fix landed in WWBN/AVideo commit 1b55a9b3c491 — awaiting tagged release

https://github.com/WWBN/AVideo/commit/1b55a9b3c4911d2f31594ce2e60566c70c6b95e8
github Patch Available🟡 PoC Available

Unauthenticated Arbitrary File Write in AVideo · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-v7p7-jccx-h37c

Vendor Advisories for CVE-2026-72748(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 60× in last 7d / 86× 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. 2026-08-21 05:27 UTCGHSA enrichment
  2. 2026-08-21 01:39 UTCEG score recompute
  3. 2026-08-21 01:39 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 21:51 UTCGHSA enrichment
  6. 2026-08-20 18:04 UTCGHSA enrichment
  7. 2026-08-20 14:16 UTCGHSA enrichment
  8. 2026-08-20 09:52 UTCGHSA enrichment
  9. 2026-08-20 06:05 UTCGHSA enrichment
  10. 2026-08-20 02:17 UTCGHSA enrichment
  11. 2026-08-19 22:29 UTCGHSA enrichment
  12. 2026-08-19 18:41 UTCEG score recompute
  13. 2026-08-19 18:41 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 14:36 UTCGHSA enrichment
  16. 2026-08-19 10:42 UTCGHSA enrichment
  17. 2026-08-19 06:46 UTCGHSA enrichment
  18. 2026-08-19 02:56 UTCGHSA enrichment
  19. 2026-08-18 22:55 UTCGHSA enrichment
  20. 2026-08-18 19:08 UTCGHSA enrichment
  21. 2026-08-18 15:17 UTCEG score recompute
  22. 2026-08-18 15:17 UTCGHSA enrichment
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 13:49 UTCEPSS rescore
  25. 2026-08-18 10:53 UTCGHSA enrichment
Show 61 more
  1. 2026-08-18 07:04 UTCGHSA enrichment
  2. 2026-08-18 03:14 UTCGHSA enrichment
  3. 2026-08-17 23:24 UTCGHSA enrichment
  4. 2026-08-17 19:36 UTCGHSA enrichment
  5. 2026-08-17 15:48 UTCEG score recompute
  6. 2026-08-17 15:48 UTCGHSA enrichment
  7. 2026-08-17 13:47 UTCEPSS rescore
  8. 2026-08-17 12:00 UTCGHSA enrichment
  9. 2026-08-17 08:12 UTCGHSA enrichment
  10. 2026-08-17 04:25 UTCGHSA enrichment
  11. 2026-08-17 00:37 UTCGHSA enrichment
  12. 2026-08-16 20:49 UTCGHSA enrichment
  13. 2026-08-16 17:01 UTCEG score recompute
  14. 2026-08-16 17:01 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 13:13 UTCGHSA enrichment
  18. 2026-08-16 09:25 UTCGHSA enrichment
  19. 2026-08-16 05:38 UTCEG score recompute
  20. 2026-08-16 05:38 UTCGHSA enrichment
  21. 2026-08-16 02:15 UTCEPSS rescore
  22. 2026-08-16 01:51 UTCGHSA enrichment
  23. 2026-08-15 22:03 UTCGHSA enrichment
  24. 2026-08-15 18:15 UTCGHSA enrichment
  25. 2026-08-15 14:27 UTCGHSA enrichment
  26. 2026-08-15 10:39 UTCGHSA enrichment
  27. 2026-08-15 06:51 UTCGHSA enrichment
  28. 2026-08-15 03:03 UTCEG score recompute
  29. 2026-08-15 03:03 UTCGHSA enrichment
  30. 2026-08-15 01:31 UTCEPSS rescore
  31. 2026-08-14 23:15 UTCGHSA enrichment
  32. 2026-08-14 19:28 UTCGHSA enrichment
  33. 2026-08-14 15:40 UTCGHSA enrichment
  34. 2026-08-14 11:52 UTCGHSA enrichment
  35. 2026-08-14 08:05 UTCGHSA enrichment
  36. 2026-08-14 04:17 UTCGHSA enrichment
  37. 2026-08-14 00:30 UTCEG score recompute
  38. 2026-08-14 00:30 UTCGHSA enrichment
  39. 2026-08-13 22:00 UTCEPSS rescore
  40. 2026-08-13 20:42 UTCGHSA enrichment
  41. 2026-08-13 16:54 UTCGHSA enrichment
  42. 2026-08-13 13:06 UTCGHSA enrichment
  43. 2026-08-13 09:19 UTCGHSA enrichment
  44. 2026-08-13 05:31 UTCGHSA enrichment
  45. 2026-08-13 01:43 UTCGHSA enrichment
  46. 2026-08-12 21:56 UTCGHSA enrichment
  47. 2026-08-12 18:08 UTCGHSA enrichment
  48. 2026-08-12 14:20 UTCEG score recompute
  49. 2026-08-12 14:20 UTCGHSA enrichment
  50. 2026-08-12 13:51 UTCEPSS rescore
  51. 2026-08-12 10:33 UTCGHSA enrichment
  52. 2026-08-12 06:45 UTCGHSA enrichment
  53. 2026-08-12 02:57 UTCGHSA enrichment
  54. 2026-08-11 23:09 UTCGHSA enrichment
  55. 2026-08-11 19:22 UTCGHSA enrichment
  56. 2026-08-11 15:35 UTCEG score recompute
  57. 2026-08-11 15:35 UTCGHSA enrichment
  58. 2026-08-11 14:32 UTCEG score recompute
  59. 2026-08-11 13:25 UTCEG score recompute
  60. 2026-08-11 12:22 UTCEG score recompute
  61. 2026-08-11 12:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72748?
CVE-2026-72748 is a critical vulnerability published on August 11, 2026. AVideo contains an unauthenticated arbitrary file write vulnerability in the aVideoEncoderChunk.json.php endpoint that allows remote attackers to write up to 4 GB of arbitrary content to the server filesystem via HTTP PUT requests without authentication. Attackers can exhaust disk space causing…
When was CVE-2026-72748 disclosed?
CVE-2026-72748 was first published in the National Vulnerability Database on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72748 actively exploited?
CVE-2026-72748 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 51.1% of all scored CVEs.
What is the CVSS score of CVE-2026-72748?
CVE-2026-72748 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-72748?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72748, 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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