CVE-2026-33483
published 2026-03-23CVE-2026-33483: 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…
PriorityP351high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.60%
44.5th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| wwbn | avideo | <= 26.0 | — |
| wwbn | avideo | 0 – 26.0 | — |
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OSV
AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
osv·2026-03-20
CVE-2026-33483 [HIGH] AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
## Summary
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.
## Details
The file `objects/aVideoEncoderChunk.json.php` (25 lines total) operates entirely outside the AVideo framework:
```php
// objects/aVideoEncoderChunk.json.php — full file
file = tempnam(sys_get_temp_dir(), 'YTPChunk_'); // Line 5
GHSA
AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
ghsa·2026-03-20
CVE-2026-33483 [HIGH] CWE-770 AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
AVideo Affected by Unauthenticated Disk Space Exhaustion via Unlimited Temp File Creation in aVideoEncoderChunk.json.php
## Summary
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.
## Details
The file `objects/aVideoEncoderChunk.json.php` (25 lines total) operates entirely outside the AVideo framework:
```php
// objects/aVideoEncoderChunk.json.php — full file
file = tempnam(sys_get_temp_dir(), 'YTPChunk_'); // Line 5
No detection rules found.
No public exploits indexed.
2026-03-23
Published