{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102581", "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "state": "PUBLISHED", "assignerShortName": "fedora", "dateReserved": "2026-09-29T14:03:38.494Z", "datePublished": "2026-09-30T08:36:08.405Z", "dateUpdated": "2026-09-30T08:36:08.405Z"}, "containers": {"cna": {"title": "Moodle: xss in forum post templates due to insufficient escaping", "metrics": [{"other": {"content": {"value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in Moodle. Insufficient output escaping in templates used to display forum posts enables a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious content into a forum post, which then executes arbitrary script code in the browser of another user viewing the affected post."}], "affected": [{"versions": [{"status": "affected", "version": "5.2.0", "lessThan": "5.2.2", "versionType": "semver"}, {"status": "affected", "version": "5.1.0", "lessThan": "5.1.6", "versionType": "semver"}, {"status": "affected", "version": "5.0.0", "lessThan": "5.0.9", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "4.5.13", "versionType": "semver"}], "packageName": "moodle", "collectionURL": "https://git.moodle.org", "defaultStatus": "unaffected"}], "references": [{"url": "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88981"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-102581", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543634", "name": "RHBZ#2543634", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://moodle.org/mod/forum/discuss.php?d=482499"}], "datePublic": "2026-09-29T20:17:12.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "timeline": [{"lang": "en", "time": "2026-09-09T13:08:58.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-09-29T20:17:12.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Upstream acknowledges Lars Bonczek as the original reporter."}], "providerMetadata": {"orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "shortName": "fedora", "dateUpdated": "2026-09-30T08:36:08.405Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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{"affected": [{"affectedData": [{"collectionURL": "https://git.moodle.org", "defaultStatus": "unaffected", "packageName": "moodle", "versions": [{"lessThan": "5.2.2", "status": "affected", "version": "5.2.0", "versionType": "semver"}, {"lessThan": "5.1.6", "status": "affected", "version": "5.1.0", "versionType": "semver"}, {"lessThan": "5.0.9", "status": "affected", "version": "5.0.0", "versionType": "semver"}, {"lessThan": "4.5.13", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "patrick@puiterwijk.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in Moodle. Insufficient output escaping in templates used to display forum posts enables a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious content into a forum post, which then executes arbitrary script code in the browser of another user viewing the affected post."}], "id": "CVE-2026-102581", "lastModified": "2026-09-30T09:17:15.213", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 2.5, "source": "patrick@puiterwijk.org", "type": "Secondary"}]}, "published": "2026-09-30T09:17:15.213", "references": [{"source": "patrick@puiterwijk.org", "url": "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88981"}, {"source": "patrick@puiterwijk.org", "url": "https://access.redhat.com/security/cve/CVE-2026-102581"}, {"source": "patrick@puiterwijk.org", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543634"}, {"source": "patrick@puiterwijk.org", "url": "https://moodle.org/mod/forum/discuss.php?d=482499"}], "sourceIdentifier": "patrick@puiterwijk.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "patrick@puiterwijk.org", "type": "Secondary"}]}

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