{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102586", "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "state": "PUBLISHED", "assignerShortName": "fedora", "dateReserved": "2026-09-29T14:03:38.494Z", "datePublished": "2026-09-30T08:36:19.341Z", "dateUpdated": "2026-09-30T15:28:08.409Z"}, "containers": {"cna": {"title": "Moodle: xss via password reset link due to insufficient username 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": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in Moodle. Insufficient sanitization of username input on the password reset page allows a remote attacker to conduct a cross-site scripting (XSS) attack. By convincing an unauthenticated user to access a specially crafted password reset link, an attacker could execute arbitrary script in the victim's browser."}], "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-88335"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-102586", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543641", "name": "RHBZ#2543641", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://moodle.org/mod/forum/discuss.php?d=482504"}], "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 Henk van den Toorn as the original reporter."}], "providerMetadata": {"orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "shortName": "fedora", "dateUpdated": "2026-09-30T08:36:19.341Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-102586", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-30T13:56:33.265497Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-30T15:28:08.409Z"}}]}}

{}

{"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 sanitization of username input on the password reset page allows a remote attacker to conduct a cross-site scripting (XSS) attack. By convincing an unauthenticated user to access a specially crafted password reset link, an attacker could execute arbitrary script in the victim's browser."}], "id": "CVE-2026-102586", "lastModified": "2026-09-30T16:20:44.613", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "patrick@puiterwijk.org", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-102586", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-30T13:56:33.265497Z", "version": "2.0.3"}}]}, "published": "2026-09-30T09:17:15.897", "references": [{"source": "patrick@puiterwijk.org", "url": "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88335"}, {"source": "patrick@puiterwijk.org", "url": "https://access.redhat.com/security/cve/CVE-2026-102586"}, {"source": "patrick@puiterwijk.org", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543641"}, {"source": "patrick@puiterwijk.org", "url": "https://moodle.org/mod/forum/discuss.php?d=482504"}], "sourceIdentifier": "patrick@puiterwijk.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "patrick@puiterwijk.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "moodle", "vendor": "moodle"}], "created": "2026-09-30T10:45:17.177448+00:00", "updated": "2026-09-30T12:00:16.351110+00:00", "vendors": ["moodle", "moodle$PRODUCT$moodle"]}