Vulnerability-Lookup

GHSA-Q6C7-VM4C-28MJ

Vulnerability from github – Published: 2026-08-11 15:32 – Updated: 2026-08-11 15:32

Details

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.

Severity

9.1 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

6.9 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72748"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-11T13:19:05Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-q6c7-vm4c-28mj",
  "modified": "2026-08-11T15:32:37Z",
  "published": "2026-08-11T15:32:37Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-v7p7-jccx-h37c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72748"
    },
    {
      "type": "WEB",
      "url": "https://github.com/WWBN/AVideo/commit/1b55a9b3c4911d2f31594ce2e60566c70c6b95e8"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/avideo-unauthenticated-arbitrary-file-write-via-avideoencoderchunk-json-php"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-72748 (GCVE-0-2026-72748)

Vulnerability from cvelistv5 – Published: 2026-08-11 12:17 – Updated: 2026-08-11 14:12

Title

AVideo Unauthenticated Arbitrary File Write via aVideoEncoderChunk.json.php

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-11 14:08 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

VulnCheck

References

3 references

URL	Tags
https://github.com/WWBN/AVideo/security/advisorie…	vendor-advisory
https://github.com/WWBN/AVideo/commit/1b55a9b3c49…	patch
https://www.vulncheck.com/advisories/avideo-unaut…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
WWBN	AVideo	Affected: 29.0 (custom)

Date Public

2026-07-21 00:00

Credits

DhiyaneshGeek neo-ai-engineer

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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GHSA-Q6C7-VM4C-28MJ

CVE-2026-72748 (GCVE-0-2026-72748)

Tags

Sightings

Nomenclature