{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-26047", "assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "state": "PUBLISHED", "assignerShortName": "fedora", "dateReserved": "2026-02-10T13:30:03.986Z", "datePublished": "2026-02-21T05:40:11.001Z", "dateUpdated": "2026-02-21T05:40:11.001Z"}, "containers": {"cna": {"title": "Moodle: moodle: uncontrolled resource consumption in tex formula editor leading to denial of service", "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": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A denial-of-service vulnerability was identified in Moodle\u2019s TeX formula editor. When rendering TeX content using mimetex, insufficient execution time limits could allow specially crafted formulas to consume excessive server resources. An authenticated user could abuse this behavior to degrade performance or cause service interruption."}], "affected": [{"versions": [{"status": "affected", "version": "0", "lessThan": "4.5.9", "versionType": "semver"}, {"status": "affected", "version": "5.0.0", "lessThan": "5.0.5", "versionType": "semver"}, {"status": "affected", "version": "5.1.0", "lessThan": "5.1.2", "versionType": "semver"}], "packageName": "moodle", "collectionURL": "https://github.com/moodle/moodle", "defaultStatus": "unaffected"}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-26047", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2440905", "name": "RHBZ#2440905", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-02-19T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "description": "Uncontrolled Resource Consumption", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-400: Uncontrolled Resource Consumption", "timeline": [{"lang": "en", "time": "2026-02-19T08:55:57.177Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-02-19T00:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Aleksey Solovev (Positive Technologies) for reporting this issue."}], "providerMetadata": {"orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5", "shortName": "fedora", "dateUpdated": "2026-02-21T05:40:11.001Z"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A denial-of-service vulnerability was identified in Moodle\u2019s TeX formula editor. When rendering TeX content using mimetex, insufficient execution time limits could allow specially crafted formulas to consume excessive server resources. An authenticated user could abuse this behavior to degrade performance or cause service interruption."}], "id": "CVE-2026-26047", "lastModified": "2026-02-21T06:17:00.377", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "patrick@puiterwijk.org", "type": "Secondary"}]}, "published": "2026-02-21T06:17:00.377", "references": [{"source": "patrick@puiterwijk.org", "url": "https://access.redhat.com/security/cve/CVE-2026-26047"}, {"source": "patrick@puiterwijk.org", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2440905"}], "sourceIdentifier": "patrick@puiterwijk.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "patrick@puiterwijk.org", "type": "Secondary"}]}

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