Vulnerability-Lookup

CVE-2026-39368 (GCVE-0-2026-39368)

Vulnerability from cvelistv5 – Published: 2026-04-07 19:23 – Updated: 2026-04-07 20:02

Title

WWBN AVideo has a Live restream log callback flow enabling stored SSRF to internal services

Summary

WWBN AVideo is an open source video platform. In versions 26.0 and prior, the Live restream log callback flow accepted an attacker-controlled restreamerURL and later fetched that stored URL server-side, enabling stored SSRF for authenticated streamers. The vulnerable flow allowed a low-privilege user with streaming permission to store an arbitrary callback URL and trigger server-side requests to loopback or internal HTTP services through the restream log feature.

Severity

6.5 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/WWBN/AVideo/security/advisorie…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
WWBN	AVideo	Affected: <= 26.0

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-39368

Vulnerability from fkie_nvd - Published: 2026-04-07 20:16 - Updated: 2026-06-17 10:42

Severity

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/security/advisories/GHSA-q4x6-6mm2-crg9	Third Party Advisory

Impacted products

	Vendor	Product	Version
	wwbn	avideo	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "AVideo",
          "vendor": "WWBN",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 26.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "774C24F1-9D26-484F-B931-1DA107C8F588",
              "versionEndIncluding": "26.0",
              "vulnerable": true
            }
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          "operator": "OR"
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    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WWBN AVideo is an open source video platform. In versions 26.0 and prior, the Live restream log callback flow accepted an attacker-controlled restreamerURL and later fetched that stored URL server-side, enabling stored SSRF for authenticated streamers. The vulnerable flow allowed a low-privilege user with streaming permission to store an arbitrary callback URL and trigger server-side requests to loopback or internal HTTP services through the restream log feature."
    }
  ],
  "id": "CVE-2026-39368",
  "lastModified": "2026-06-17T10:42:00.330",
  "metrics": {
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      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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            },
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            }
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          "role": "CISA Coordinator",
          "timestamp": "2026-04-07T20:02:14.076807Z",
          "version": "2.0.3"
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  "references": [
    {
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      "tags": [
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      ],
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-q4x6-6mm2-crg9"
    }
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  "vulnStatus": "Analyzed",
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}

GHSA-Q4X6-6MM2-CRG9

Vulnerability from github – Published: 2026-04-08 00:08 – Updated: 2026-04-08 00:08

Summary

WWBN AVideo has a Live restream log callback flow enabling stored SSRF to internal services

Details

Summary

The Live restream log callback flow accepted an attacker-controlled restreamerURL and later fetched that stored URL server-side, enabling stored SSRF for authenticated streamers.

The vulnerable flow allowed a low-privilege user with streaming permission to store an arbitrary callback URL and trigger server-side requests to loopback or internal HTTP services through the restream log feature.

Details

The vulnerable chain was:

plugin/Live/view/getRestream.json.php exposed a fresh tokenForAction
plugin/Live/view/Live_restreams/verifyTokenForAction.json.php exchanged it for a valid responseToken
plugin/Live/view/Live_restreams_logs/add.json.php accepted attacker-controlled restreamerURL
plugin/Live/view/getRestream.json.php and plugin/Live/view/Live_restreams/getAction.json.php later fetched that stored URL server-side

The original issue existed because the responseToken was accepted, but the callback destination was not tightly constrained to trusted restreamer endpoints.

The maintainer confirmed the vulnerability and stated that the fix was applied by validating restreamerURL at storage time and re-validating the log-entry branch before use. The maintainer also noted that the m3u8 field follows the same general pattern but is not server-fetched in the current flow.

Proof of concept

Log in as a non-admin user with streaming permission.
Create a normal restream destination.
Trigger plugin/Live/view/Live_restreams/testRestreamer.json.php to create a live transmission history row.
Call:

GET /plugin/Live/view/getRestream.json.php?live_transmitions_history_id=<id>&restreams_id=<id>

Extract tokenForAction from the returned URL.
Exchange it for responseToken via:

POST /plugin/Live/view/Live_restreams/verifyTokenForAction.json.php

Store a loopback callback URL:

POST /plugin/Live/view/Live_restreams_logs/add.json.php
restreamerURL=http://127.0.0.1:9999/index.php

Trigger getRestream.json.php again.
Observe that the returned response now contains the JSON body from the loopback-only service.

Impact

An authenticated streamer can cause the AVideo server to send HTTP requests to loopback or internal services and return the response through normal application endpoints by storing a malicious restreamerURL in the restream log flow. Because the callback destination was not constrained to trusted restreamer endpoints, the application could be used as a proxy to internal-only services that trust network locality. Successful exploitation can expose local admin panels, internal-only APIs, cloud metadata services if reachable, or other sensitive internal responses available from the application host.

Recommended fix

Validate restreamerURL against explicitly configured restreamer endpoints at storage time
Re-validate the stored callback URL before server-side fetch
Bind responseToken to the expected restream row and callback host
Apply SSRF validation to the initial destination of every server-side fetch, not only redirect targets
Ignore or reject user-supplied callback hosts that do not match trusted configuration

Severity

6.5 (Medium)


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

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-2026-39368"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-08T00:08:42Z",
    "nvd_published_at": "2026-04-07T20:16:30Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nThe Live restream log callback flow accepted an attacker-controlled `restreamerURL` and later fetched that stored URL server-side, enabling stored SSRF for authenticated streamers.\n\nThe vulnerable flow allowed a low-privilege user with streaming permission to store an arbitrary callback URL and trigger server-side requests to loopback or internal HTTP services through the restream log feature.\n\n## Details\n\nThe vulnerable chain was:\n\n1. `plugin/Live/view/getRestream.json.php` exposed a fresh `tokenForAction`\n2. `plugin/Live/view/Live_restreams/verifyTokenForAction.json.php` exchanged it for a valid `responseToken`\n3. `plugin/Live/view/Live_restreams_logs/add.json.php` accepted attacker-controlled `restreamerURL`\n4. `plugin/Live/view/getRestream.json.php` and `plugin/Live/view/Live_restreams/getAction.json.php` later fetched that stored URL server-side\n\nThe original issue existed because the `responseToken` was accepted, but the callback destination was not tightly constrained to trusted restreamer endpoints.\n\nThe maintainer confirmed the vulnerability and stated that the fix was applied by validating `restreamerURL` at storage time and re-validating the log-entry branch before use. The maintainer also noted that the `m3u8` field follows the same general pattern but is not server-fetched in the current flow.\n\n## Proof of concept\n\n1. Log in as a non-admin user with streaming permission.\n2. Create a normal restream destination.\n3. Trigger `plugin/Live/view/Live_restreams/testRestreamer.json.php` to create a live transmission history row.\n4. Call:\n\n```text\nGET /plugin/Live/view/getRestream.json.php?live_transmitions_history_id=\u003cid\u003e\u0026restreams_id=\u003cid\u003e\n```\n\n5. Extract `tokenForAction` from the returned URL.\n6. Exchange it for `responseToken` via:\n\n```text\nPOST /plugin/Live/view/Live_restreams/verifyTokenForAction.json.php\n```\n\n7. Store a loopback callback URL:\n\n```text\nPOST /plugin/Live/view/Live_restreams_logs/add.json.php\nrestreamerURL=http://127.0.0.1:9999/index.php\n```\n\n8. Trigger `getRestream.json.php` again.\n9. Observe that the returned response now contains the JSON body from the loopback-only service.\n\n## Impact\n\nAn authenticated streamer can cause the AVideo server to send HTTP requests to loopback or internal services and return the response through normal application endpoints by storing a malicious `restreamerURL` in the restream log flow. Because the callback destination was not constrained to trusted restreamer endpoints, the application could be used as a proxy to internal-only services that trust network locality. Successful exploitation can expose local admin panels, internal-only APIs, cloud metadata services if reachable, or other sensitive internal responses available from the application host.\n\n\n## Recommended fix\n\n- Validate `restreamerURL` against explicitly configured restreamer endpoints at storage time\n- Re-validate the stored callback URL before server-side fetch\n- Bind `responseToken` to the expected restream row and callback host\n- Apply SSRF validation to the initial destination of every server-side fetch, not only redirect targets\n- Ignore or reject user-supplied callback hosts that do not match trusted configuration",
  "id": "GHSA-q4x6-6mm2-crg9",
  "modified": "2026-04-08T00:08:42Z",
  "published": "2026-04-08T00:08:42Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-q4x6-6mm2-crg9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39368"
    },
    {
      "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:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "WWBN AVideo has a Live restream log callback flow enabling stored SSRF to internal services"
}

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.

Action not permitted

CVE-2026-39368 (GCVE-0-2026-39368)

FKIE_CVE-2026-39368

GHSA-Q4X6-6MM2-CRG9

Summary

Details

Proof of concept

Impact

Recommended fix

Tags

Sightings

Nomenclature