CVE-2026-41056

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{"affected": [{"affectedData": [{"product": "AVideo", "vendor": "WWBN", "versions": [{"status": "affected", "version": "<= 29.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wwbn:avideo:*:*:*:*:*:*:*:*", "matchCriteriaId": "AC38CA07-71C1-4C86-B84A-83CF96367CBA", "versionEndIncluding": "29.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "WWBN AVideo is an open source video platform. In versions 29.0 and below, the `allowOrigin($allowAll=true)` function in `objects/functions.php` reflects any arbitrary `Origin` header back in `Access-Control-Allow-Origin` along with `Access-Control-Allow-Credentials: true`. This function is called by both `plugin/API/get.json.php` and `plugin/API/set.json.php` \u2014 the primary API endpoints that handle user data retrieval, authentication, livestream credentials, and state-changing operations. Combined with the application's `SameSite=None` session cookie policy, any website can make credentialed cross-origin requests and read authenticated API responses, enabling theft of user PII, livestream keys, and performing state changes on behalf of the victim. Commit caf705f38eae0ccfac4c3af1587781355d24495e contains a fix."}, {"lang": "es", "value": "WWBN AVideo es una plataforma de video de c\u00f3digo abierto. En las versiones 29.0 e inferiores, la funci\u00f3n \u2019allowOrigin($allowAll=true)\u2019 en \u2019objects/functions.php\u2019 refleja cualquier encabezado \u2019Origin\u2019 arbitrario en \u2019Access-Control-Allow-Origin\u2019 junto con \u2019Access-Control-Allow-Credentials: true\u2019. Esta funci\u00f3n es llamada tanto por \u2019plugin/API/get.json.php\u2019 como por \u2019plugin/API/set.json.php\u2019 - los puntos finales de API principales que manejan la recuperaci\u00f3n de datos de usuario, la autenticaci\u00f3n, las credenciales de transmisi\u00f3n en vivo y las operaciones que cambian el estado. Combinado con la pol\u00edtica de cookies de sesi\u00f3n \u2019SameSite=None\u2019 de la aplicaci\u00f3n, cualquier sitio web puede realizar solicitudes de origen cruzado con credenciales y leer respuestas de API autenticadas, lo que permite el robo de PII del usuario, claves de transmisi\u00f3n en vivo y la realizaci\u00f3n de cambios de estado en nombre de la v\u00edctima. El commit caf705f38eae0ccfac4c3af1587781355d24495e contiene una soluci\u00f3n."}], "id": "CVE-2026-41056", "lastModified": "2026-10-26T21:10:00.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-41056", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-22T13:15:03.935061Z", "version": "2.0.3"}}]}, "published": "2026-04-21T23:16:20.850", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/WWBN/AVideo/commit/caf705f38eae0ccfac4c3af1587781355d24495e"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-ccq9-r5cw-5hwq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-942"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,29.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "AVideo", "source": "cna", "vendor": "WWBN"}, "product": "avideo", "vendor": "wwbn"}], "analysis": {"en": {"generated_at": "2026-04-22T06:16:17.746691+00:00", "value": {"mitigation_remediation": ["Apply the fix from commit caf705f38eae0ccfac4c3af1587781355d24495e released by the vendor", "Upgrade AVideo to a version newer than 29.0 where the allowOrigin function no longer returns credentials for sensitive endpoints", "If an upgrade is not immediately possible, reconfigure the server to enforce a strict Access\u2011Control\u2011Allow\u2011Origin policy that rejects arbitrary Origins and removes the Allow\u2011Credentials header from these endpoints"], "summary": {"action": "Patch", "impact": "Cross\u2011origin account takeover via reflected CORS headers that allow credentialed requests, leading to theft of personal data and control of livestreams"}, "threat_synthesis": {"affected_systems": "The affected application is the WWBN AVideo open\u2011source video platform. Versions 29.0 and earlier contain the vulnerable implementation in objects/functions.php, plugin/API/get.json.php, and plugin/API/set.json.php. No other vendors or products are listed as affected.\n", "description_and_impact": "The vulnerability lies in the function that reflects any supplied Origin header to the Access\u2011Control\u2011Allow\u2011Origin response while also enabling credentials for both data retrieval and state\u2011changing API endpoints. This flaw permits a malicious web site to issue cross\u2011origin, authenticated requests and read protected responses, resulting in theft of personal user information, livestream keys, and the ability to modify user state. The weakness maps to CWE\u2011942, reflecting a misuse of CORS.\n", "risk_and_exploitability": "With a CVSS score of 8.1, this vulnerability is considered high severity. The EPSS score is not provided, but the lack of KEV listing does not diminish the risk; attackers can exploit the flaw from any arbitrary web page by simply setting the Origin header and using the Server\u2011side SameSite=None session cookie policy to carry credentials. The attack requires only a web browser and the ability to target the victim\u2019s device, making exploitation straightforward for determined adversaries."}}}}, "created": "2026-04-22T03:30:06.539982+00:00", "updated": "2026-04-22T06:30:10.662039+00:00", "vendors": ["wwbn", "wwbn$PRODUCT$avideo"]}