{"id":"CVE-2026-104755","revision":null,"records":[{"revision":"429c35d01f874465a6a234ff5b3e3480","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-104755","aliases":[],"title":"WP Compress <= 7.25.00 - Unauthenticated Privilege Escalation to 'group'/'setting'/'value' Parameters on comms Endpoint","description":"The WP Compress – Instant Performance & Speed Optimization plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 7.25.00 The vulnerability exists because the `start_comms` dispatcher (`wps_ic_comms::start_comms`), hooked on every front-end request, gates access only by comparing the caller-supplied `apikey` parameter against the stored plugin API key with no WordPress capability check and no nonce verification, then passes the unvalidated `group`, `setting`, and `value` parameters directly to `change_setting()`, which writes them into the `WPS_IC_SETTINGS` option without an allow-list. This makes it possible for unauthenticated attackers to write arbitrary permission keys into the plugin's settings, causing `wps_ic_users::checkAndAddCaps()` to grant any WordPress role — including Subscriber — the `manage_wpc_settings` capability and thereby achieve plugin-administrator-equivalent control over the plugin's optimization, CDN, and critical-CSS surfaces. The API key required to pass the authorization check can itself be obtained without authentication via the `wpc_send_critical_remote` nopriv AJAX action: when the external critical-CSS service returns an `apiResults` field, `initCritical()` echoes the stored plugin API key back to the caller in a `wp_send_json_success` response, completing the exploit chain entirely without a WordPress login.","state":0,"publishedAt":"2026-10-16T06:41:04.957+00:00","modifiedAt":"2026-10-16T15:09:38.262+00:00","affected":[{"ecosystem":"Vendor product","name":"WP Compress – Instant Performance & Speed Optimization","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"aresit\",\n                    \"product\": \"WP Compress – Instant Performance & Speed Optimization\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"7.25.00\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8,"severity":"MEDIUM"}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/67e9bfb8-b274-422a-a50d-a6b6b24bb193?source=cve","https://plugins.trac.wordpress.org/browser/wp-compress-image-optimizer/tags/7.10.03/classes/comms.class.php#L49","https://plugins.trac.wordpress.org/browser/wp-compress-image-optimizer/tags/7.10.03/classes/users.class.php#L30","https://plugins.trac.wordpress.org/browser/wp-compress-image-optimizer/tags/7.10.03/classes/comms.class.php#L1042","https://plugins.trac.wordpress.org/browser/wp-compress-image-optimizer/tags/7.10.03/classes/ajax.class.php#L816","https://plugins.trac.wordpress.org/browser/wp-compress-image-optimizer/tags/7.10.03/addons/criticalCss/criticalCss.php#L409","https://plugins.trac.wordpress.org/changeset?reponame=&new=3734610%40wp-compress-image-optimizer%2Ftags%2F7.26.00&old=3723132%40wp-compress-image-optimizer%2Ftags%2F7.25.00"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104755","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-104755","identifiers":["CVE-2026-104755"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T10:04:34.0648037+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-09T10:04:34.0648037+00:00","lastSuccessAt":"2026-11-09T10:04:34.2246806+00:00","error":null,"lastVerifiedAt":"2026-11-09T10:04:34.2246841+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-959e97d06f32ad78d34e1b0ba6a6e5cd74265f5a3f17190fe2a4f93cc705e8ca","complete":true,"records":421341,"lastAttemptAt":"2026-11-09T10:02:25.7011931+00:00","lastSuccessAt":"2026-11-09T10:02:25.6766256+00:00","error":null,"lastVerifiedAt":"2026-11-09T10:02:25.7011931+00:00","snapshotPublishedAt":"2026-11-09T09:30:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-994943cd8cb046f49f56409fe0b1d8c6","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T10:16:43.0170247+00:00","lastSuccessAt":"2026-11-09T10:16:43.013+00:00","error":"6 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T10:16:43.013+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13701,"expectedIdentifiers":13707,"failedIdentifiers":6},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T10:04:34.0648037+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T10:04:34.0648037+00:00","lastSuccessAt":"2026-11-09T10:04:34.2253534+00:00","error":null,"lastVerifiedAt":"2026-11-09T10:04:34.2253535+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-4dc74a26d06148ffa8eb6751d602315d","complete":true,"records":13667,"lastAttemptAt":"2026-11-09T10:04:35.2758607+00:00","lastSuccessAt":"2026-11-09T10:04:35.272+00:00","error":null,"lastVerifiedAt":"2026-11-09T10:04:35.272+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13707,"expectedIdentifiers":13707,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T10:04:28.5294921+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T10:04:28.5294921+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T10:02:25.7473895+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T10:02:25.7473895+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-747b24005f13ffe3f133ae77dfb12ae3145f2c7aed5cfebb91eb943ceb4daeb6","complete":true,"records":3060,"lastAttemptAt":"2026-11-09T10:04:34.0336984+00:00","lastSuccessAt":"2026-11-09T10:04:33.8957851+00:00","error":null,"lastVerifiedAt":"2026-11-09T10:04:34.0336984+00:00","snapshotPublishedAt":"2026-11-09T10:03:05+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-e6e6ac3eaece246ff08884368fe1dc99d4d393571e77c126c8f4d38d66697688","complete":true,"records":231297,"lastAttemptAt":"2026-11-09T10:04:28.3938244+00:00","lastSuccessAt":"2026-11-09T10:04:27.0059369+00:00","error":null,"lastVerifiedAt":"2026-11-09T10:04:28.3938244+00:00","snapshotPublishedAt":"2026-11-09T09:33:10+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}