{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102577", "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "state": "PUBLISHED", "assignerShortName": "fedora", "dateReserved": "2026-09-29T14:03:38.493Z", "datePublished": "2026-09-30T08:35:59.663Z", "dateUpdated": "2026-09-30T08:35:59.663Z"}, "containers": {"cna": {"title": "Moodle: ssrf risk in url downloader via ipv4-mapped ipv6 address bypass", "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": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in Moodle. Incorrect handling of IPv4-mapped IPv6 addresses within the URL downloader's host-blocking logic allows an authenticated remote user to bypass blocked-host restrictions. By supplying a crafted URL, an attacker can induce the server to make requests to restricted destinations, leading to Server-Side Request Forgery (SSRF)."}], "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-88779"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-102577", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543604", "name": "RHBZ#2543604", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://moodle.org/mod/forum/discuss.php?d=482495"}], "datePublic": "2026-09-29T20:17:12.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-918", "description": "Server-Side Request Forgery (SSRF)", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-918: Server-Side Request Forgery (SSRF)", "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 Kaique Costa as the original reporter."}], "providerMetadata": {"orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "shortName": "fedora", "dateUpdated": "2026-09-30T08:35:59.663Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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