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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.2]"}}], "product": "callbackkiller_service_widget", "vendor": "krellbat"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "product": "wordpress", "vendor": "wordpress"}], "analysis": {"en": {"generated_at": "2026-04-15T18:28:24.073240+00:00", "value": {"mitigation_remediation": ["Upgrade the CallbackKiller service widget to the newest release that includes a proper capability check or remove the plugin if no update is available.", "If an update is not an option, modify the cbk_save() function (or the Ajax handler) to include a capability check such as current_user_can('manage_options') and a nonce validation to ensure only authorized users can invoke the action.", "As a last resort, disable the widget entirely or block access to the Ajax endpoint using a firewall rule or .htaccess restrictions to prevent unauthenticated callers."], "summary": {"action": "Patch Now", "impact": "Unauthorized Configuration Change"}, "threat_synthesis": {"affected_systems": "The vulnerable product is the CallbackKiller service widget developed by krellbat for WordPress. All releases with a version number of 1.2 or lower are affected. WordPress sites that have installed or are still using any of these versions are at risk.", "description_and_impact": "The CallbackKiller service widget, a WordPress plugin, suffers from a missing capability check in the cbk_save() function across all versions up to 1.2. This flaw allows any visitor to invoke the Ajax endpoint cbk_save_v1 and alter the plugin\u2019s site ID settings without authentication, effectively modifying configuration data. The vulnerability enables unauthorized data modification but does not provide immediate code execution.", "risk_and_exploitability": "The CVSS score of 5.3 indicates a moderate severity, while the EPSS score of less than 1% reflects a very low likelihood of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. An unauthenticated attacker can directly send an Ajax request to the cbk_save_v1 endpoint, bypassing any capability checks, because the plugin lacks proper authorization logic. The attack vector is publicly accessible through the target site\u2019s URL."}}}}, "created": "2026-02-16T12:02:13.758163+00:00", "updated": "2026-04-15T18:30:10.962827+00:00", "vendors": ["krellbat", "krellbat$PRODUCT$callbackkiller_service_widget", "wordpress", "wordpress$PRODUCT$wordpress"]}