{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-28555", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-02-28T18:54:23.280Z", "datePublished": "2026-02-28T21:47:35.544Z", "dateUpdated": "2026-05-11T23:11:35.765Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-05-11T23:11:35.765Z" }, "title": "wpForo Forum 2.4.14 Missing Authorization via Topic Close AJAX Handler", "descriptions": [ { "lang": "en", "value": "wpForo Forum 2.4.14 contains a missing authorization vulnerability that allows authenticated subscribers to close or reopen any forum topic via the wpforo_close_ajax handler. Attackers submit a valid nonce with an arbitrary topic ID to bypass the moderator permission requirement and disrupt forum discussions." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Missing Authorization", "cweId": "CWE-862", "type": "CWE" } ] } ], "affected": [ { "vendor": "gVectors Team", "product": "wpForo Forum", "versions": [ { "status": "affected", "version": "2.4", "lessThan": "2.4.16", "versionType": "custom" }, { "status": "unaffected", "version": "2.4.16", "versionType": "semver" } ], "defaultStatus": "unaffected" } ], "cpeApplicability": [ { "operator": "OR", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.4", "versionEndExcluding": "2.4.16" }, { "vulnerable": false, "criteria": "cpe:2.3:a:gvectors:wpforo_forum:2.4.16:*:*:*:*:*:*:*" } ] } ] } ], "metrics": [ { "cvssV4_0": { "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 5.3, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS" }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1" }, "format": "CVSS" } ], "references": [ { "url": "https://wordpress.org/plugins/wpforo/", "name": "wpForo Forum WordPress Plugin", "tags": [ "product" ] }, { "url": "https://wordpress.org/plugins/wpforo/#developers", "name": "wpForo Forum Contributors & Developers", "tags": [ "patch" ] }, { "name": "VulnCheck Advisory: wpForo Forum 2.4.14 Missing Authorization via Topic Close AJAX Handler", "tags": [ "third-party-advisory" ], "url": "https://www.vulncheck.com/advisories/wpforo-forum-missing-authorization-via-topic-close-ajax-handler" } ], "credits": [ { "lang": "en", "value": "Scott Moore - VulnCheck", "type": "finder" } ], "x_generator": { "engine": "scooter" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-03-03T19:38:23.123740Z", "id": "CVE-2026-28555", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-06T15:17:12.767Z" } } ] } }