by Kastro
Paper/Archive/CVE-2026-72748

CVE-2026-72748

WWBN AVideo — AVideo Unauthenticated Arbitrary File Write via aVideoEncoderChunk.json.php

EPSS 1%public exploitCVSS 9.1
critical.is priorityof 100
51
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 67.9.679 × 2013.6Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
AVideo29.0–CNA

Scores by source

VulnCheck (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
VulnCheck (CNA)6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/WWBN/AVideo/security/advisories/GHSA-v7p7-jccx-h37cpatchgithub.com/WWBN/AVideo/commit/1b55a9b3c4911d2f31594ce2e60566c70c6b95e8writeupvulncheck.com/advisories/avideo-unauthenticated-arbitrary-file-write-via-avideoencoderchunk-json-php